Which of the following are pyrimidine?
A. Guanine and cytosine
B. Thymine and Guanine
C. Cytosine and uracil
D. Guanine and adenine
E. Adenine and thymine
Answer:
c.Cytosine and uracil
Explanation:
Two types of Nitrogenous bases(heterocyclic aromatic molecules) are found in DNA and RNA: 1.Pyrimidines and 2.Purines
Pyrimidines:Thymine(5-methyl-2,4-dioxypyrimidine) and Cytosine(2-oxy-4-aminopyrimidine) are found in DNA . Uracil (2,4-dioxypyrimidine) and Cytosine (2-oxy-4-aminopyrimidine) are found in RNA.
Purines:Adenine (6-aminopurine) and Guanine(6-oxy-2-aminopurine) are the two purine bases that are found in both DNA and RNA.
What is the probability that each of the following pairs of parents will produce the indicated offsprings? (assume independent assortment of all gene pairs)
a)CCDDEE•ccddee=CcDdEe
b)CCDdEe•CcDdEe=CCddEE
c) CcDdEe•CcDdEe=CcDdEe
d)ccDdEE•CCDdee=CcDdEe
Answer:
C is the pick c I'm 99% sure
How are sexual and asexual reproduction similar?
A. Both are processes that form new cells necessary for the survival of either an organism or a species.
B. Both are processes that produce daughter cells with the same number of chromosomes as the parent cells.
C. Both are processes used to replace dead skin cells.
D. Both are processes used to create exact copies of cells.
Choose all the answers that apply. Charlle has a normal karyotype. He has one x chromosome one y chromosome 23 chromosome pairs 46 chromosomes two x chromosomes two Y chromosomes
Answer: Charlie is XY, 46chromosome, 23 pairs
Explanation: Charlie has a normal male karyotype 46XY
48XXYY is an abnormal syndrome associated with tall stature but intellectual disability, developmental delays and other problems
2. Based on your results, can any conclusions be draw as to the types of habitats likely to contain the most microbes?
Answer:
Yes.
Explanation:
Yes, conclusions can be drawn from the types of habitats the most microbes likely to present because different microbes needs different types of environmental conditions. Some microbes needs moist and cool environment and can't survive in warm and dry environment while some microbes survive in dry and warm environment and die in moist and cool environment so we can draw conclusion from their habitat types.
When shorthorn red cattle are bred to shorthorn white cattle, they produce roan (red and white hairs interspersed) offspring. What type of inheritance is this
Answer:
Co-dominance.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
In Genetics, co-dominance can be defined as a phenomenon in which two (2) alleles of the same gene are present in a living organism and both are equally expressed to a degree or simultaneously.
This ultimately implies that, co-dominance is a phenomenon that typically involves the relationship between alleles i.e the two (2) versions of a gene present in living organisms. Also, a single version of a gene expressed by a living organism is referred to as an allele.
In this scenario, when shorthorn red cattle are bred to shorthorn white cattle, they produce roan (red and white hairs interspersed) offspring. Therefore, this type of inheritance is known as co-dominance because the two (2) alleles (shorthorn red and shorthorn white) are expressed equally or simultaneously in their offspring i.e a roan.
What are hydrothermal vents and how are they significant?
What does light years measure
A light-year is how astronomers measure distance in space, hope this helps ^^
Answer:
Light year measures distance in space
Explanation:
it is mostly used to estimate very far distances and so it might take us about 24 million light years to travel to another galaxy and so on
Which air mass would produce cold, dry weather in the winter?
Answer:
The correct answer is - Continental polar air mass. The continental polar air masses are very big air masses that are very cold, and dry
Answer:
Continental Polar Air Mass
Explanation:
The continental polar air masses are vey big air masses that are very cold, and dry.
Which of the following is the major concern with utilizing forensic DNA testing?
O keeping Innocent people out of all
treating genetic diseases as early as possible
a violation of privacy
a violation of the law
Answer: a violation of privacy
Explanation:
A person's DNA cannot be changed as it is their genetic information. It is therefore their most private information and when it is utilized in forensic DNA testing, it runs the risk of invading a person's privacy.
Forensic DNA testing works by comparing the subject DNA with a DNA database. Using this database means going through the DNA of millions of people without their consent.
This is their most private information and it is being stored and accessed without permission. Critics say that this is a violation of privacy and many studies have showed that this is a major concern
Monitoring levels of which two gases would help determine the human
impact on air quality?
A. Methane
B. Water vapor
C. Carbon dioxide
D. Oxygen
Answer:
A. Methane
C. Carbon dioxide
Explanation:
Methane and carbondioxide are the two gases that determine the human impact on air quality because these gases are produced due to human activities. Methane gas is used in homes for cooking and heating purpose while on the other hand, carbondioxide gas is released from burning of fossil fuels in the engine of vehicles and industries for making different products. These two gases greatly affect air quality.
Answer:
a and c your welcome my children
Explanation:
(JUST GIVE ME THE 2 REASONS GOOD AND BAD NO NEED FOR A PARAGRAPH ILL DO IT) Since we can use DNA fingerprinting to catch criminas, why not have every American give a DNA sample so everyone is on file to make it easier to catch criminals . write 1 paragraph supporting this and 1 paragraph explaining why it would be a bad idea .
Answer:
(Bad idea)
Many people are against the idea of extending the DNA database because of the potential threat it has to our privacy. While a DNA profile provides very little information about someone, their DNA sample contains information that can reveal their ethnicity or how susceptible they are to disease. The risk of data abuse is therefore potentially high.
(Good idea)
A DNA database of everyone may make it easier for police to identify missing people and unidentified remains.
I found a good article that is helpful for your paragraph. It supports both sides. It wont let me link so just type in :
"Is it ethical to have a national DNA database?" and it should be the first article that pops up
Answer:
why we should
Every American should give their DNA sample so then its easier, takes less time and so police can move on to other more important cases. Taking samples of DNA from all Americans would dramatically improve law enforcement's efficiency. Thousands of people have been convicted because suspects can be searched out across space and time based on DNA evidence. Hundreds of innocent people have also been freed, often after years behind bars, sometimes just short of the death penalty.
Why we shouldnt
Taking every single american dna will take a long time and will take alot of money and resources. And sometimes your genetic information could be sold to the highest bidder. And sometimes The results are often inaccurate.
i couldnt find more reasons why we shouldnt so you should go over why we should section more
The body layers that can be dissected in the dissection study area are arranged from superficial to deep.
True or False
Answer:
True
Explanation:
The correct option about the arrangement of the body layers to be dissected in a dissection study from superficial to deep is ; TRUE
During dissection study there only one way in which structures can be viewed also when the body layers are to be dissected are arranged in only one way as well ( from superficial to deep ) because the superficial layers lie just under the skin while deep layers lies deep inside the skin surrounding each muscle.
therefore arranging the body layers from superficial to deep is the best arrangement when dissecting.
Learn more : https://brainly.com/question/17874053
what conditions can cause a population to decrease?
Answer:
if the population is too high and food is scarce.
high population attract predators.
high competition for food.
mutations.
Answer:
A reduction over time in a region's population can be caused by sudden adverse events such as outbursts of infectious disease, famine, and war or by long-term trends, for example sub-replacement fertility, persistently low birth rates, high mortality rates, and continued emigration.
How does the mitotic spindle ensure that each daughter cell receives a full complement of the genetic material in the cell nucleus
Answer:
The mitotic spindle attaches to the kinetochores at the centromeres of the chromosomes and then it moves toward the poles of the cell. Thus, sister chromatids are separated simultaneously at their centromeres so that each daughter cell will have the same genetic material as the parent cell (i.e., daughter cells will be genetically identical to the parent cell).
Explanation:
The mitotic spindle is a structure composed of microtubule proteins whose function is to ensure the correct segregation of the chromosomes during mitosis. During metaphase, microtubules from the mitotic spindle bind to the kinetochore (a protein complex assembled on the centromeric region) in order to align sister chromatids on the metaphase plate. Subsequently, during anaphase, the mitotic spindle moves toward the poles of the cell, thereby sister chromatids are separated from each other. In consequence, each daughter cell will have the same amount of genetic material (i.e., the same number of chromosomes) as the parent cell.
What is the after effect of increased temperature in the atmosphere?
Answer:
global warming
Explanation:
Citrus trees create their seed by a method of asexual reproduction by a process called
Answer:
Some plants can produce seeds without fertilization. Either the ovule or part of the ovary, which is diploid in nature, gives rise to a new seed. This method of reproduction is known as apomixis. An advantage of asexual reproduction is that the resulting plant will reach maturity faster.
Explanation:
Answer:
Apomixis
Explanation:
Apomixis is the method of asexual reproduction.
Hope this is correct, have a great day.
Two genes (R or r) and (D or d), each with a dominant and recessive allele, are
inherited independently of each other. Which of the following combinations
could result in gametes of a plant with an Rr Dd genotype?
A. RD and rd
B. DR, Dr, Rd, dr
C. DD, Dd, dd, RR, Rr, rr
D. Rr and Dd
Select the best answer for the question
4. All the following impact water clarity except for
O A. light penetration
B. phytoplankton
C. suspended sediments
D. nutrients
Answer:
A. light penetration
Explanation:
Water clarity refers to how clear a water is, and it is a measure of how far/deep light can penetrate into such a water body. A water that is not clear is said to be TURBID. Several factors affect the clarity of a water body and they include;
- Phytoplankton, which refers to floating algae on the water body. An accumulated growth of phytoplankton can affect the penetration of light into the water, hence, making the water unclear.
- Suspended sediments can also block the penetration of light into the water, reducing water clarity.
- Nutrients in form of fertilizer or waste materials can also make water unclear.
Therefore, LIGHT PENETRATION DOES NOT IMPACT WATER CLARITY, rather it is dependent on water clarity.
Which statement describes the wave interactions in sound navigation and ranging (SONAR)?
O A. Sound is transmitted through the water and diffracted by hard surfaces.
o
B. Sound is transmitted through the water and reflected by hard surfaces.
о
C. Sound is diffracted through the water and transmitted by hard surfaces.
о
D. Sound is diffracted through the water and reflected by hard surfaces.
Answer:
B
Explanation:
In sound navigation and ranging (SONAR) the sound wave is transmitted through water and it will reflect by hard surfaces, hence option b is correct.
What is sound navigation and ranging (SONAR)?Sonar is used to create nautical charts, find underwater navigation hazards, search for and map things on the seafloor such as shipwrecks, and map the seafloor itself, waves are transmitted into the water and reflected by hard surfaces.
The transmission and receiving of sound waves are involved in active sonar. For example, when a submarine is used to map the topography of the ocean floor.
it emits sound pulses, known as pings, towards the bottom of the ocean in its area Sound is transmitted through the water and hard surface reflection.
Therefore wave interaction in sonar is sound is transmitted in water and reflected by hard surface, hence option b is correct.
Learn more about sound navigation and ranging, here:
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HELP ITS DUE SOOOONNNN
Answer:
A
Explanation:
Denim
Hope this helps :D Have a great day :3
Which best explains why a decrease in the types of insects in an ecosystem reduces the sustainability of the
ecosystem?
O Organisms that depend on insects may not survive, eventually harming all the organisms that are interconnected.
O The biodiversity of the ecosystem cannot be protected by laws unless there are a certain number of insect
species.
O There will likely be fewer insects that harm plants, causing an increase in plant diversity.
O Having fewer insects allows other organisms to use the resources that the insects were using.
Answer:
I'd say A!
Explanation:
Which of the following is not true about organic farming?
A) It is more like a natural ecosystem than a monoculture.
B) It occupies a small fraction of U.S. farmland.
C) It minimizes negative environmental impacts.
D) It contributes a large amount to agricultural income.
E) It produces foods that do not contain artificial compounds.
Answer:
D
all other answers are true
At 23°F, 1 inch of rain equals 10 inches of snow.
Convert 2 inches of rainfall to snowfall.
Make up and solve division problems that involve
decimals
Answer:
The correct answer is - 20 inches
Explanation:
1 inch of rain equals 10 inches of snow, then
1 = 10 inch snow
2 = 10*2
2= 20 inches of snow.
The correct answer is - 20 inches
Someone please help me
Answer:
Your answer is D) Graduated Cylinder.
Answer:
Graduated cylinder
Explanation:
Liquid volume is typically measured using specific tool called graduated cylinder.
Explain how thermal energy is circulated in Earth's atmosphere. How does this energy impact the air molecules in the upper atmosphere? Use complete sentences in your response
Which of the following statements is true about photosynthesis and cellular respiration?
Both photosynthesis and cellular respiration occur in all living things.
Only cellular respiration occurs in all living things.
Photosynthesis occurs in the nucleus of the cell.
Only photosynthesis occurs in all living things.
Answer:
Both
Explanation:
What type of bond is used to hold together base pairs ?
Answer:
Hydrogen Bonds
Explanation:
the kind of their shape allows them to bond together
EXTRA CREDIT:
6. The human body responds to stressors by activating the nervous
system and specific hormones. The hormones
and
speed up heart rate, breathing rate, blood pressure, and metabolism.
Answer:
adrenaline
Explanation:
Why is crossing over of the chromosomes during meiosis
important?
Because it increases the genetic variability, offering more combinations of genotypes.