The process of evolution involves changes in the genetic makeup of a population over a period of time. Sexual reproduction enhances variability among offspring. The random alteration of DNA from parent to offspring, called mutations, also produces variable characteristics in offspring. Some mutations can be helpful, while others can be harmful and hinder survival. In this experiment, students mimicked random mutations. Data was collected to determine if the mutations were helpful or harmful when trying to collect and eat food.
Which mutation provided an advantage for food collecting, but was detrimental when it came to food eating?
A. Group D hands fused
B. Group E webbing on hands and feet
C. Group A long nails
D. Group B paddle hands
Answers
Answer:
D, as you can see with the time. Collecting is very quick but eating not so much.
Explanation:
Related Questions
john and sue are expecting a child, but are concerned about a rare autosomal recessive disease that is present in both of their families. in the pedigree, john is represented as individual iii‑11 and sue is represented as individual iii‑12; both are unaffected. john's sister, iii‑10, and sue's brother, iii‑13, both do not show evidence of the disease, but john's paternal grandmother and sue's maternal grandfather both had the disease. assign the appropriate symbol to each individual in the pedigree.
Answers
If he is a carrier of the gene, he may have received the disease allele from his mother, making him a carrier as well. received the allele from his mother. He received only one normal allele from his father.
Here is the family tree. I found exercises online.
Those without icons are II-5, II-6, II-8, III-10, III-11, III-12, III-13.
Her individual II-5 will be a half black/half white square. Square because the introductory text states that it is John's paternal grandmother (I-2) who has the disease. His mother contracted the disease, so she inevitably passed on an allele that was the disease allele, and his father did not have or exhibit the disease, so he was half black/half white. Yes, meaning that John's father (II-5) received only the normal allele.
Individual II-6 has a question mark in a circle. If John's father is individual II-5, she is John's mother, so circle. A question mark because there is no information about how her disease manifests itself in her.Her sister received two alleles for the disease.
Each her II-8 has a half black/half white circle. If her father is individual II-7 (square), she is Sue's mother, so circle. Because her father had the disease, he inevitably passed on an allele that was the disease allele, and her mother did not have the disease and showed no symptoms, so half black/half was white, and Sue's mother (II-8) received only one normal allele. .
The III-10 would have a circled question mark on it. She is a circle because, as said in the introduction, she is John's sister. Because we are unable to determine whether she carries all disease alleles or none at all, we have put a question mark beside her name. Since her mother is only a carrier of one disease gene, she might have inherited a disease allele from either her father or her mother; but, if her mother has the condition, she would unquestionably have inherited a disease allele from her mother and not from her father.
John, Individual III-11 has a question mark in the square. John is a man, so he is square. A question mark because we cannot determine whether he has the disease allele or no disease at all. From the introductory text, we conclude that he has no evidence of the disease, but the If he only has the allele, he may have acquired the disease allele from his father or mother. From his father if his mother is ill.
Sue, Individual III-12 has a question mark in a circle. Maru because it's a woman's Sue. A question mark because it is not possible to determine whether she has the disease allele or no disease at all. If she is a carrier, she may have received the disease allele from her mother, making her a carrier as well. She has a normal allele from her mother. She received her only one normal allele from her father.
Individuals III-13 are marked with a question mark in the square. According to the introductory text, he is Sue's brother, hence the square. A question mark because we cannot determine if he has the disease allele or not the disease at all.
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Which test would measure the coating of red cells by antibody as occurs in hemolytic transfusion reactions? *
Answers
Answer:
DAT(Direct Antiglobulin Test)
People see bullfighting as many different things. which of these does carmen not mention? a sport an art form a game a form of cruelty to animals
Answers
These does carmen not mention a sport an art form a game a form of cruelty to animals.
Given name Carmen has two distinct antecedents. Its primary roots are Spanish and Italian, and it is a shortened form of the Hebrew word for a mountain range in northern Israel, Karmel, which is used for Carmel and Carmelo.The Latin word carmen, which means "ode" or "poem" and is also the source of the English term "charm," is where the second derivation comes from. The word Carmenta, which derives from this root, is Latin in origin, as is the portion of archaic Latin known as "Carmen Saliare." The name is unisex in English, although it is typically given to women in Spanish, Portuguese, Catalan, French, and Romanian; it is frequently given to men in Italian.To learn more about Carmen.
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Predict what happens to cell membrane composition in the brain of a wolf living in yellowstone national park with hot summers and cool winters.
Answers
is deficiency of vitamin is called beriberi
Answers
Answer:Beriberi is a disease in which the body does not have enough thiamine (vitamin B1).
Explanation:
Answer:
yes deficiency of vitamin is called beriberi
What impact does photosynthesis have on atmospheric carbon dioxide? Does it use or produce carbon dioxide?
Answers
Answer:
As photosynthetic organisms, plants take up atmospheric CO2, chemically reducing the carbon. This represents not only an acquisition of stored chemical energy for the plant but also provides the carbon skeletons for the organic molecules that make up a plant's structure. Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.
Explanation:
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Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual?(1 point)
response to the environment
use of energy to function
reproduction
growth and change over a life cycle
Answers
Answer:
Reproduction
Explanation:
A species cannot survive if there is no reproduction but the individual can survive.
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Answers
Answer:
A Punnett Square is a helpful tool that helps to predict the variations and probabilities that can come from cross breeding. This includes predicting crossing plants, animals, even humans with each other for the first one.
cystic fibrosis and sickle cell anemia for the second one.
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How do emission and reflection nebulae differ?(1 point)
Responses
contain remnants of stars
contain remnants of stars
interactions with light
interactions with light
the presence of young stars
the presence of young stars
hard line edges
hard line edges
Answers
An emission nebula generally glows because of the close by stars that emit mild or photons. This nebula is visible in a sparkling crimson shadeation. On the contrary, a mirrored image nebula, that is frequently visible in blue, truely displays the mild of the close by stars.
Emission nebulae have a tendency to be crimson in shadeation due to the abundance of hydrogen. Reflection Nebula - A mirrored image nebula differs from an emission nebula in that it does now no longer emit radiation of its own. It is a cloud of dirt and fueloline that displays the mild electricity from a close-by supermegacelebrity or institution of stars. Clouds of excessive temperature fueloline.
The atom withinside the cloud are energized through ultraviolet mild shape a close-by supermegacelebrity and emit radiation as they fall returned into decrease states. These nebulae are generally crimson due to the fact the essential emission line of hydrogen occurs to be crimson.
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3. A cork has a mass of 3 grams and a volume of 16 cm 3 . Calculate the densit
Answers
Answer: 0.1875
Explanation: i just did D = M/V so 3/16 and got 0.1875
studying patterns of disease prevalence at different spatial and temporal scales offers a glimpse into both the potential for and results of coevolution of hosts and their parasites.
Answers
Studying patterns of disease prevalence at different spatial and temporal scales offers a glimpse into both the potential for and results of coevolution of hosts and their parasites.
What is starch ?A polymeric carbohydrate called starch, also known as amylum, is made up of a lot of glucose units connected by glycosidic linkages. The majority of green plants synthesize this polysaccharide as a form of energy storage. It is the most prevalent type of carbohydrate consumed by people worldwide and is present in significant proportions in common foods like wheat, potatoes, maize (corn), rice, and cassava (manioc).
Pure starch is a powder that is white, odorless, tasteless, and insoluble in alcohol or cold water. It is made up of the branching amylopectin and the linear and helical amylose molecules. Starch typically comprises 20 to 25% amylose and 75 to 80% amylopectin by weight, depending on the plant. Animals store their energy in glycogen, which is a more intricately branched form of amylopectin.
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To deter- mine how long an SPF will protect a person from burning in the Sun, multi- ply the amount of time the person can spend in the Sun before starting to burn by the SPF rating. If an individual who usually burns in 10 min uses a product with an SPF of 15, how long will the protection last?
Answers
Answer:
Take the time you would normally burn in the sun without protection, 20 minutes will normally produce redness on a light skinned individual. Multiply this number by the SPF of your product. Example: with an SPF 15 x 20 minutes of sun time = 300 … is how many minutes you can stay in the sun without burning.
Will U and T ever appear in the same strand together?
Answers
1. . What is facilitated diffusion?
2. Name one type of proteins are involved in facilitated diffusion?
3. True / False: Diffusion of water and facilitated diffusion require energy from a cell.
4. Diffusion of water and facilitated diffusion are forms of
transport.
__________________
5. What is osmosis?
6. Controlling osmosis is important in helping a cell maintain
which is a stable internal environment.
_____________________
7. In osmosis, water molecules move toward the region of
concentration.
___________________
8. Osmosis works because water molecules (solvent) can move through a membrane, but __________________________ cannot.
Numbers 9 and 10 are on the next page.
9. Two solutions that have equal concentrations are said to be ________________.
10. If a red blood cell is placed into a hypertonic solution, what will happen to that red blood cell?
Answers
Facilitated diffusion is a type of passive transport of molecules across the plasma membrane.
What is facilitated diffusion?1. Facilitated diffusion is a passive transport of molecules, which means that it does not spend energy to be able to generate the passage through the membrane. So the molecule is going to be passing down its concentration gradient.
2. One class of proteins involved in facilitated diffusion is carrier proteins.
3. False: Diffusion of water and facilitated diffusion does not require energy expenditure.
4. Diffusion of water and facilitated diffusion are forms of passive transport.
5. Osmosis is a process in which there is a movement of water across a semi-permeable membrane.
6. Controlling osmosis is important in helping a cell maintain which is a stable internal environment it's true.
7. In osmosis, water molecules move toward the region of higher concentration of molecules.
8. Osmosis works because water molecules (solvent) can move through a membrane, but solutes cannot.
9. Two solutions that have equal concentrations are said to be isoosmotic.
10. If a red blood cell is placed into a hypertonic solution, the cell will shrink as the water will leave it in order to equalize the concentrations.
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Predict what happens to cell membrane composition in the brain of a wolf living in yellowstone national park with hot summers and cool winters.
Answers
The cell membrane fatty acid composition will not change between season.
Which of the are following are most likely to diffuse by the cell membrane?
Phospholipids are made up of a single phosphate molecule that is often attached to the polar head group that defines the lipid group as well as a glycerol molecule bound to two lipid tails. These molecules have hydrophilic heads on a hydrophobic body.
It is likely that CO2 travels across the lipid bilayer far more quickly than any other molecule of these. Since CO2 only consists of three relatively tiny atoms and lacks a dipole moment, it is naturally predisposed to pass through the membrane quickly. There is no charge separation and a linear geometry since the two oxygens are joined by a double bond. The other compounds described are either significantly larger or both.
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The number of fatty acids in cell membranes won't alter with the seasons.
What are cell membranes?All cells contain a membrane, known as the cell membrane or the plasma membrane, which isolates the interior of the cell from the external world.
A lipid bilayer that is semipermeable makes up the cell membrane.
The cell membrane controls the movement of materials into and out of the cell.
Fat-based lipids and 3. 33proteins make up the majority of the components of cell membranes. Phospholipids and sterols make up the majority of the two types of membrane lipids.
It offers defense against the outside environment for the cell and its cellular components.
The flow of molecules into and out of the cell is controlled by its selective permeability.
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If you hold a salty cracker in your mouth long enough, it will begin to taste sweet. What is responsible for this change in taste?.
Answers
The salty cracker begins to taste sweet when kept in the mouth long enough because the cracker actually consists of carbohydrates that are broken down in the mouth by the action of salivary enzymes, forming sugars like glucose or sucrose.
Carbohydrates are the biomacromolecules. These are of three types: monosaccharides, disaccharides and polysaccharides. The examples are glucose, sucrose, starch, etc. The monosaccharides and disaccharides consists of sugars but polysaccharides do not contain any sugars.
Salivary enzymes are the digestive enzymes released in the mouth. These enzymes perform the breakdown of polymers made up of glucose or other monosaccharides as a monomer.
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fimbriae and pili differ in that fimbriae and pili differ in that pili are used for transfer of dna and motility. pili are used to transfer dna. there are only one or two pili per cell. pili are used for motility. pili are used for attachment to surfaces.
Answers
Fimbriae and pili differ in that: (a) pili are used for transfer of DNA and motility.
Fimbriae are the structures used for attachment. These are long fragments that are proteinaceous in nature. Fimbriae play an important role in the synthesis of biofilms, thereby helping in colonization.
Pili are the short structures that appear hair-like on the surface of bacteria. Pili serve various purpose in the cell. These are: attachment, virulence, transfer of DNA, and movement. Pili also show antigenicity in the host's body. The pili used for the process of DNA transfer is also known as conjugative pili. This process is also called bacterial conjugation.
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Collections of specialized cells and extracellular substances around them are known as a(n):_____.
Answers
Answer:
tissues
Explanation:
when the cell combined it make tissues that means they are specialized cells
the extracellular around them=====
the extracellular matrix of connective tissue is composed of ground substance and fiber
i think it help u
How are brain and nerve cells function related to their structure?
Answers
Specialized projections called axons allow neurons to transmit electrical and chemical signals to other cells.
1
Which of the following is a symptom of cataracts?
Blurred vision
O "Halos" around lights
Experiencing double vision in one eye
All of the above
Answers
Answer:
The symptoms of cataracts are blurred or glory vision, Halos around light and double vision in one eye.
Therefore the answer is all of the above
.The protective outer shells of coral animals are formed from
Answers
Answer: limestone
or a calcium carbonate
Explanation:
The introductory passage discusses the importance of being able to study anme in a pure culture instead of in the consortium that exists in nature. Many bacteria exist in biofilms in nature. Based on the information in the passage and in the chapter, is it possible to create a pure culture of a species that normally exists in biofilms?.
Answers
Yes, as a biofilm can include a single species and numerous species can have planktonic growth or reside there.
Plankton- Microalgae, sometimes referred to as phytoplankton, are comparable to photosynthetic organisms in that they have chlorophyll and need sunlight to survive and develop. The upper ocean, where sunlight may reach the water, is where the majority of phytoplankton floats since they are buoyant. The growth of plankton is known as Planktonic growth.
Biofilm- An extracellular polymeric material matrix surrounds an assembly of surface-associated microbial cells that is known as a biofilm. Van Leeuwenhoek is credited with discovering microbial biofilms because he discovered bacteria on tooth surfaces using his crude microscopes.
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What monomers do shapes B, C, D and E represent?
Which macromolecule did you build?
Answers
The macromolecule which is formed or build is lipid.
What is lipid?
Lipid has been described as an organic compound which has been not able to dissolve in the water. The example of the lipid are oils, waxes, hormones, as well as fats. The main function or performance of the lipid has to maintain the structure or the components of the cell membranes, that storage site of energy, and important molecule of the cell signaling.
A monomer has been defined as a type of molecule that is able to make chemical bond with any of the molecule and has been form a long chain and polymer in a sequence of the chain of an unspecified or unknown number of the monomers.
Therefore, the macromolecule which is formed or build is lipid.
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Please help!
the trait for blue eyes in humans is caused by a recessive allele. if this gene is named e, what is the genotype of a blue-eyed person?
1.) ee
2.) ee
3.) e
4.) ee
Answers
Answer: ee
Explanation:
just took the test :)
Answer: the order i have them in here may or may not have the same answers unless its genetic research quick check
1. A version of a gene is called a. answer allele
2. The trait for blue eyes in humans is caused by a recessive allele. If this gene is named capital e, what is the genotype of a blue-eyed person? answer ee lowercase ee not capital ee
3. Describe the relationships among genes, dna, and traits. answer Traits are determined by genes, which are composed of dna.
4. In mice, the gene for tail length has two alleles. A long tail is dominant to a short tail. If a long-tailed mouse that is heterozygous mates with a short-tailed mouse, what are the chances of having offspring with short tails? answer 50%
5. What is meant by a phenotype ratio in a Punnett square? answer the fraction of possible offspring that can be observed to have a trait
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Explanation:
Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answers
Answer:
Cornea of the eye
Explanation:
It is the only part in human body which has no blood supply. It directly takes oxygen from the air.
Answer:
yes, there is a part of a human body that gets oxygen directly from the air and not from the blood is "THE CORNEA"
What island is 65ºN,18ºW
Answers
Answer:
Iceland
Explanation:
a single stranded dna (oligonucleotides) can hybridize with (select one): select one: a. complementary dna b. complementary rna c. complementary protein d. a and b
Answers
A single stranded DNA (oligonucleotides) can hybridize with complementary RNA.
What is oligonucleotides?
Short DNA or RNA molecules called oligonucleotides have several uses in forensic science, genetic research, and testing. These tiny pieces of nucleic acids, which are frequently produced in the lab by solid-phase chemical synthesis and can be produced as single-stranded molecules with any user-specified sequence, are essential for artificial gene synthesis, polymerase chain reaction (PCR), DNA sequencing, molecular cloning, and the use of molecular probes. Ordinarily, oligonucleotides can be found in nature as small RNA molecules that control the expression of genes or as intermediates in the decay of bigger nucleic acid molecules.
Antisense oligonucleotides are single-stranded DNA sequences that bind to complementary locations in mRNAs and prevent translation by encouraging RNase H to cleave the RNA strand in mRNA-DNA hybrids. They are typically 15 to 25 nucleotides in length.
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If a plant's stomata were temporarily inhibited from opening during the daytime, how would this affect the plant?
Answers
The plant would be unable to perform cellular respiration, and cells would become starved for energy.Carbon dioxide wanted for photosynthesis is acquired thru open plant stomata. At night time, whilst daylight is not to be had and photosynthesis isn't occurring, stomata near. This closure prevents water from escaping thru open pores.
Because flowers should change gases thru their stomata, final them prevents flowers from taking on carbon dioxide (CO2). Without CO2, flowers can't make carbohydrates, and flowers can most effective reap this vital molecule whilst stomata are open.
Plants lose the bulk in their water thru stomata. Thus, they near their stomata at night time to save you extra lack of water thru them. Stomata cannot be closed withinside the daytime, due to the fact the plant has to consumption carbon dioxide for the manner of photosynthesis.
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When incorporated into a polypeptide chain not at the n or c terminus, _______ would make the charge of the polypeptide more positive.
Answers
Answer:The answer is arginine.
Explanation:please give brainliest if right.
4. Calculate the actual size of one cell in each of the following microscope Images, as seen on low
power. Assume the FOV is 5.0 mm.
Answers
To calculate the size of the magnified cell we can use the following formula
Actual size = Image size(with ruler) / Magnification.
How does a microscope function to determine the size of a cell?Divide the number of cells that span the field of view's diameter by the field of view's diameter to determine a cell's length. If 50 cells are aligned end to end to form a field with a diameter of 5 mm, then 5 mm/50 cells equals 0.1 mm/cell.
What is the equation for magnification image size and actual size?Actual size = image size / magnification.
Image size = magnification x actual size.
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