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.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.