AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many times does the nucleus divide in meiosis
A
0
B
1
C
2
D
3
Explanation: 

Detailed explanation-1: -Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. The parent cell undergoes one round of DNA replication followed by two separate cycles of nuclear division.

Detailed explanation-2: -What happens during meiosis II? During meiosis II, the two cells once again cycle through four phases of division.

Detailed explanation-3: -In contrast, meiosis consists of two nuclear divisions resulting in four nuclei that are usually partitioned into four new haploid daughter cells. The nuclei resulting from meiosis are not genetically identical and they contain one chromosome set only.

Detailed explanation-4: -Two nuclear divisions occur during meiosis: meiosis I and meiosis II. Meiosis reduces chromosome number and introduces genetic variations in offsprings.

Detailed explanation-5: -Figure 6: Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions.

There is 1 question to complete.