During fertilization, a haploid sperm cell unites with a haploid egg cell to form a diploid zygote, as shown below.
Which of the following diagrams shows how the zygote looks immediately following one cell division?

A. Y
B. X
C. W
D. Z

the answer is trees if i'm not mistaken

as many times as you want

is this a psat question, if so do not cheat try your best.

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.