Question

HELP ME PLEASE !!!!!!!! NINTH GRADE BIO!!!

The table below provides the number of chromosomes found in the body cells of various types of organisms.


Diploid Chromosome Number
Fruit Fly
8
Human
46
Goldfish
94

Which of the following is the best explanation for why the chromosome numbers above are all even?
The diploid chromosome number represents two sets of chromosomes, one from each parent, so it is always an even number.

Animal cells always have an even number of chromosomes, and plant cells always have an odd number of chromosomes.

The diploid chromosome number is always even to ensure that equal numbers of chromosomes end up in each daughter cell during meiosis.

The number of chromosomes present in a diploid cell doubles for each generation because there are two parents.

Answer 1

The answer is The diploid chromosome number represents two sets of chromosomes, one from each parent, so it is always an even number.

Mentioned organisms are diploid (2n) and they have 2 sets of chromosomes in their somatic cells. However, their gametes (egg cells and sperms) are haploid (n) and have only 1 set of chromosomes.
After fertilization, a haploid egg cell from a mother and a haploid sperm from a father fuse and form diploid zygote:
n + n = 2n

Nevermind if n is odd or even number, 2n will always be even.

Answer 2

Answer:

A) The diploid chromosome number represents two sets of chromosomes, one from each parent, so it is always an even number.

Explanation: