Explain how the sugars, phosphates, and nitrogenous bases in one strand of DNA connect to a complementary strand during replication
Answer: One strand of DNA binds to another via base complementarity.
Explanation:
The two strands of the DNA double helix are connected through nucleotides. There are hydrogen bonds between the nitrogenous bases. Each nucleotide has a sugar, nitrogenous base and phosphate group. The phosphate group and sugar forms the backbone of the DNA double helix. The nitrogenous base form pairing with each other via base complementarity. Purines are adenine and guanine and pyrimidine are cytosine and thymine these are nitrogenous bases. The adenine bonded with thymine via two hydrogen bonds and cytosine with guanine with three hydrogen bonds. These nitrogenous bases help in replication process.
The two strands of DNA are actually connected by hydrogen bonds (H-bonds) between the nitrogenous bases.
There are 2 hydrogen bonds between adenine and thymine, and 3 hydrogen bonds between cytosine and guanine.
Why are sugar-phosphate and nitrogenous bases important to DNA molecules?The sugar-phosphate backbone is a significant component of DNA's double helix structure.
The structure of DNA is tied to its function. The pairing of the nitrogenous bases that are connected to the sugar-phosphate backbone play a key role in the ability of DNA to store and transfer genetic information.
Thus, base complementary is the reason.
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How many possible versions of each gene are there?
1
2
3
4
The pedigree below shows the inheritance of a dominant allele of a gene in a family over several generation. Circles represent females and squares represent males. Shaded symbols indicate individuals carrying the allele. The pedigree suggest that the gene is on a nuclear chromosome, and not on a mitochondrial DNA, because A) mitochondrial genes are not heritable B) mitochondrial mutations cannot produce dominant traits C) maternal mitochondrial mutations are inherited by all of a mother's offspring D) mitochondrial DNA is circular, whereas chromosomal DNA is linear
Complete question:
You will find the pedigree in the attached files
Answer:
The correct option is C) maternal mitochondrial mutations are inherited by all of a mother's offspring.
Explanation:
Mitochondrial inheritance is one of the ways in which a disease or a trait might be inherited from the maternal line.
Most of the DNI is located in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly carry mitochondria, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this DNI, the whole progeny of the mutated woman will be affected, as they will get the mother´s mitochondria carrying the mutation. On the contrary, if there is a man affected by a disease caused by a mutation in mitochondrial DNI, non of their descendants will get the disease.
In the exposed pedigree, we can see that the mother is affected by the disease, but the couple had two daughters, and only one of them was affected, while the other one was not. This tells us that the mutation occurred on a nuclear chromosome. If the mutated allele was in mitochondria, both daughters would be affected.
The pedigree suggests that the gene is on a nuclear chromosome, and not on a mitochondrial DNA because maternal mitochondrial mutations are inherited by all of a mother's offspring (Option C).
Mitochondrial DNA (mtDNA) is a special type of genetic material that exhibits a matrilineal inheritance pattern.In consequence, all genes (and mutations) contained in mtDNA will pass from the mother to her offspring.It is for that reason that mtDNA is widely used in evolutionary studies (we can trace matrilineal lineage from mtDNA).In conclusion, the pedigree suggests that the gene is on a nuclear chromosome, and not on a mitochondrial DNA because maternal mitochondrial mutations are inherited by all of a mother's offspring (Option C).
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Add a brown eyes cross in the Punnett Square below for practice: Mother genotype (Bb) in the top squares, father genotype (Bb) in left side squares. B B. I b
Answer:
My answer is the genotypes are BB, Bb, Bb, and bb.
Explanation:
I attached a photo of the punnet square after crossing the genotypes Bb and Bb. Crossing the B on top with the B on the side results in the genotype BB. Crossing the b on top with the B on the side results in Bb. The genotype that results is written in the box that connects the row and the column (such as top row and left column results in BB).
Which of the following statements is NOT correct?
O Heat energy is needed to melt ice into water.
O The most important source of water in the atmosphere is conduction from the oceans.
O Water reaches the land surface as rain or snow and is transported to the ocean by streams, rivers, and lakes.
O Liquid water from the Earth's surface is evaporated into a gaseous form and enters the atmosphere as water vapor.
Answer:
it's O n2. So, The most important source of water in the atmosphere is conduction...
Explanation:
Hope that helps! (Btw I did this test and got it correct)
The statement "The most important source of water in the atmosphere is conduction from the oceans" is not correct.
The most important source of water in the atmosphere is evaporation.
What is evaporation?Evaporation is a process through which a liquid transforms into a gas. It's a type of vaporization that occurs specifically at the surface of a liquid. Whenever a liquid gets heated the molecules, near its surface gain energy. Become more active. These energetic molecules tend to collide with each other resulting in some of them escaping from the liquids surface and entering the gas phase.
In terms of sourcing water for the atmosphere, evaporation of water from the Earths surface plays a role. Although water vapor does come from the oceans through conduction it's not the source that we rely on.
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I need help with this it’s due at 12:00 PM
A night sky with bright green, yellow, and red colors.
One evening, you see the northern lights, which are shown in the image.
In which layer of the atmosphere do the northern lights occur?
troposphere
stratosphere
mesosphere
thermosphere
Answer:
The thermosphere
Answer:
mesosphere
Explanation:
HELP ME PLEASE ITS DUE IN TODAY
Answer:
The Male has the dominant genes and the female has weak genes.
Put the steps of seafloor spreading in order from first to last.
Rock moves outward
A crack forms
Magma hardens
Magma pushes upward
Answer: a crack forms, magma pushes upward, magma hardens, rock moves outward.
Answer:
image
Explanation:
help Me Please .!!!..!.!.!.!.!.!.
Answer:
satured
Explanation:
A saturated solution can become supersaturated if more solute is added while the temperature is raised
how do yo abbreaviate adenosine triphosphate
Why is investment in capital goods important for a country like Japan? Japan's economy depends heavily on industry and must be modern to be competitive. Japan needs investment in capital goods to develop its rich natural resources. Investment in capital goods makes up for a poor literacy rate in Japan. Investment in capital goods makes overseas trade unnecessary.
Answer: Japan's economy depends heavily on industry and must be modern to be competitive.
Explanation:
Capital goods are referred to as the physical assets which are utilized during production process and they're simply used to produce other goods. Examples of capital goods are machinery, buildings, vehicles etc.
Investment in capital goods is important for a country like Japan because the economy of Japan depends heavily on industry and must be modern to be competitive. It is a highly industrialized country and must continually invest in order to keep up with other nations.
Name the 2 stages of photosynthesis
Answer:
Light dependent reaction and the Calvin cycle
Explanation:
pls mark me brainliest
please help me please I can’t fail
Answer: sunlight
Explanation:
it needs light to undergo photosynthesis since its what provides the initial energy that starts it
answer for brainlist
Which of the following pairs is unrelated?
O Sugar-carbohydrate
O Fat-lipid
O Amino acid-protein
O Starch-nucleic acid
The diagram shows how wind can push warm surface water away from an area to be replaced with cold, nutrient-rich water from deep in the ocean. What is this process called?
A.
chemosynthesis
B.
drainage
C.
evaporation
D.
upwelling
Explain why cell going through meiosis must divide twice
Answer:
so if one dies the other doesn't as well, then the other can find another cell to reproduce more cells.
Explanation:
An organism has died next to a river.
Describe how that organism could become a fossil.
Answer:
Being buried in sediment
Explanation:
The river floods and catches the organism's corpse, the river carries it to a larger body of water, and the corpse falls to the bottom of the body of water, over time sediment is deposited over the corpse.
how to write ammonium oxide
Answer:
(NH4)2O
Explanation:
Nitrogen>Hydrogen>Beryillum>Carbon Oxygen
When humans come to a previously pristine environment, they inadvertently bring organisms with them that can be harmful to the local flora and fauna. Such organisms are known as _____.
Answer:
INVASIVE species
Explanation:
In biology, an organism is said to be INVASIVE if the organism is foreign to a particular region or habitat and possess the unpleasant ability to proliferate or grow rapidly to the point of competing with local species of organisms.
According to this question, humans are said to introduce organisms that have the ability to harm the local flora and fauna. Hence, these organisms are INVASIVE SPECIES because they are foreign to that place and cause damage in their new environment.
Which amino acid sequences can be coded from the DNA sequence CAG TAG CGA?
The answer would be: GUC AUC GCU
The processes involved in the rock cycle include all of the following EXCEPT:
compaction
O condensation
O weathering
O erosion
1
Answer:
Condensation
Explanation:
Condensation is about water not rocks.
Which statement is the most accurate about cold air?
C. Warm air rises because it is denser.
B. Warm air sinks because it is denser.
A. Cold air rises because it is denser.
D. Cold air sinks because it is denser.
Answer:
D. Cold air sinks because it is denser.
Answer:
D
warm water rises bc it is less dense
cold water sinks because it more dense
Which statements correctly describe herbivores and carnivores?
Choose all that apply:
Carnivores are often secondary or higher consumers.
Carnivores are often primary consumers.
Herbivores are often primary consumers.
Herbivores are often producers.
Answer:
The First and Third one for sure
Explanation:
Carnivores eat primary consumers as well as other carnivores if I'm not wrong, which would make them secondary or higher consumers.
Also, herbivores eat producers, which are plants and stuff and basically organisms that make their own food, which would make them primary consumers.
How are carbon dioxide affecting the climate changes? Is there any evidence showing that humans can work on changing the Carbon Dioxide Levels? Can humans control them?
please help me this is due today!!!
help me with this to
Help thank you please
Answer:
It's C
Explanation:
QUICK ASAP PLS Certain bacteria live and grow on the roots of some plants and produce chemicals that are beneficial to the plants. Which of the following observations best supports the claim that this relationship is beneficial to the plants?
Group of answer choices
Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.
When the bacteria are removed from the plant roots and are grown in a laboratory setting, they fail to survive.
The population size of the bacteria varies greatly depending on the chemistry of the soil and the type of the plant.
The chemical produced by the bacteria can be created by humans and added to the soil where it reaches the roots of the plant.
Answer:
Explanation: Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.
Help
I don’t know what to do here
Number 2 don’t have to answer I just need help for 1!
Answer:
dominant is the 2 capital letters heterozygous dominant is one capital and one lower case
purple
hairy knuckles normal tails
Explanation: