Answer:
The correct answer is - sex and blood type.
Explanation:
Different organisms have different traits some are passed from the parents and other traits are developed by environmental influences. The traits that are passed from parents to the offspring are determined by the genes they inherited from the parents. In humans, sex is determined by the genes that present on the chromosomes and make the chromosome X chromosome or Y chromosome. The presence of the Y chromosome determines maleness.
Similarly, the blood group is determined by the genes, there are three alleles of the ABO gene present on chromosome 9; A. B. and O each allele code for a different antigen which helps them categorizing in blood groups.
Answer:
A; when a new trait evolves
Explanation:
Each branch of a cladogram represents a species ending at a clade. A clade represents a group of organisms with a common ancestor. When a new trait evolves and the group is no longer the same species, it will branch off
I believe the answer is b.
The correct answer is that Earthworms hold a closed category of circulatory system. <span>The earthworms circulates blood </span>solely through<span> their blood vessels. There are </span>three major<span> vessels that </span>deliver<span> the blood to the organs of </span>the <span>earthworm, </span>those<span> vessels are known to be the aortic arches, dorsal blood vessels, and ventral blood vessels.</span>