Question

Which of the following statements is false?

A. When two gametes fuse, they create a zygote.
B. After a zygote is formed, it begins to undergo meiosis.
C. When a somatic cell undergoes meiosis, it creates haploid cells.
D. When two gametes fuse, they create a diploid cell.

Answer 1

B

Step-by-step explanation:

Somatic cells (body cells) are normally diploid, meaning they have complete chromosomes, which is 46 in humans. When they undergo meiosis, they give rise to 4 daughter cells, each with only half of chromosomes than their parent cells, we call them haploid [C is correct]. (23 chromosomes only in humans).

These cells are usually gametes, which are used for reproduction. When 2 of these haploid gametes fuse together, they give rise to a zygote, which is the early form of a baby [A is correct] .

The zygote is diploid, (2haploid=1 diploid), so that the original diploid number of chromosomes in the organism can be retained [D is correct].

The zygote develops into an embryo through another type of cell division, mitosis. This type of division gives rise to 2 daughter cells with the same diploid number of chromosomes, so that the embryo doesn't lose chromosomes in their normal body cells [B is incorrect].