1. Which of the following is an example of a mutation? ANSWER: a. A red blood cell loses its nucleus

b. A zygote receives two X chromosomes

c. A strand of mRNA is produced from DNA
d. A nucleotide is missing in a replicated DNA

A

Explanation:

Quite simple actually. When a blood cell loses its nucleus it has no type of genetic code in order for it to function. With no DNA or Nucleus, the organelles inside the cell serve no purpose. This causes the cell to either swole or shrink. This is a form of mutation. This happens when there is no activity in the cell and it loses its proteins in the cell membrane, which leads the cell to use passive homeostasis more often than active. With no genetic code for it's cell transport, the cell gives out more necessary molecules, or takes in more necessary molecules.

answer; ///i believe its: ///(embolus);

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.