Deoxyribonucleic acid (DNA) is the hereditary material that lies within the nucleus of all cells in humans and other living organisms. Most of the DNA is placed within the nucleus and is called nuclear DNA.
A chromosome is made up of two chromatids which are joined by the centromere. The chromatids separate from each other during mitosis to form two new chromosomes. The DNA making up a chromosome is dispersed as chromatin.
Under a microscope, chromatids look like little dots and chromosomes are lines.
Gene regulation or Gene expression can be defined as a synthesis or make up of protein/RNA(Non-coding). In turn b-globin is (developing red blood cells in and only because its already programmed to).
The answer would be A because a smaller population would die out faster. The best answer is A because they are more diverse which mean everyone is least likely to get the disease.
C.
They get less powerful over land.