Once it had copied the DNA a cell normally divides into two new cells, this process is called mitosis each new cell gets a complete copy of all the DNA, bundled up as 46 chromosome. cells that are making eggs, or sperm cells they must be divide in a different way.
Extinctions that occur at a moderate rate and open a limited number of opportunities for the origin of new species are known as background extinctions.
<h3>What are background extinctions?</h3>
Extinction is the physical disappearance of one given species and/or population in an ecosystem.
The term 'background extinctions' makes reference to the extinction that does not generate new niches in an ecosystem.
Background extinctions are well known because they do not contribute to the emergence of biodiversity.
Learn more about background extinctions here:
brainly.com/question/11872946
The process of constructing an mRNA molecule from DNA is know a transcription. The bases pairing rules ensure that the DNA code is conserved in the sequence in the mRNA
Answer:
6.
The attached image contains the correct labels.
7.
a. 1
b. 6
c. 3
d. 10
e. 8
f. 4
g. 2
h. 7
i. 9
j. 5
Explanation:
7.
The entire cardiac cycle is as follows:
- Deoxygenated blood enters the right ventricle from the superior and inferior vena cava.
- The right atrium pumps the deoxygenated blood to the right ventricle.
- From the right ventricle, the deoxygenated blood moves to the lungs via the pulmonary artery.
- After gaseous exchange, the oxygenated blood returns to the heart into the left atrium via the pulmonary vein.
- From the left atrium, blood moves to the left ventricle.
- Oxygenated blood is pumped by the left ventricle into the aorta which supplies blood to all parts of the body.
- Deoxygenated blood, collected from the body again enters into the right atrium via the vana cava.