AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a cell were undergoing mitosis and it has 16 chromosomes, how many chromosomes would be found in the cells produced?
A
two cells with 8 chromosomes
B
two cells with 16 chromosomes
C
four cells with 8 chromosomes
D
four cells with 16 chromosomes
Explanation: 

Detailed explanation-1: -Answer and Explanation: If a cell with 16 chromosomes undergoes mitosis, each daughter cell will also have 16 chromosomes. Mitosis is the process of cell division and makes two identical daughter cells. These daughter cells have exactly the same genetic material because prior to mitosis DNA is duplicated.

Detailed explanation-2: -So, if the parent cell has 16 chromosomes, after meiotic division it will get reduced to half and thus, the daughter cells will have 8 chromosomes.

Detailed explanation-3: -Assuming that the organism is diploid, if a parent cell has 16 chromosomes and undergoes meiosis, the resulting cells will have exactly 8 chromosomes each. In the first stage of meiosis, all the chromosomes replicate, and the resulting sister chromatids are held together at the centromere.

Detailed explanation-4: -At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.

Detailed explanation-5: -2n = 16, it means n = 8. The haploid number of chromosomes is 8. The sperm and egg cells have a haploid number of chromosomes. Thus, it will have 8 chromosomes in their cell.

There is 1 question to complete.