AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following represents what happens to the chromosome number during MITOSIS?
A
2n
B
n
C
2n
D
2n
Explanation: 

Detailed explanation-1: -Mitosis is a fundamental process for life. During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

Detailed explanation-2: -In this simple example, a diploid body cell contains 2n = 2 chromosomes. One chromosome came from mom and one from dad. In humans, 2n = 46, so 23 came from mom, and 23 from dad.

Detailed explanation-3: -Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.

Detailed explanation-4: -The DNA content of a cell in the G1 phase is 2N (N is the number of chromosomes), also known as diploid, whereas the DNA content of a cell in the G2 phase is 4N (tetraploid). The DNA content of a cell in the S phase varies between 2N and 4N, depending on the stage of replication of the cell.

There is 1 question to complete.