AP BIOLOGY

CELL DIVISION

THE CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Meiosis is the ____
A
nuclear division of gametes
B
nuclear division of body cells
C
division of body cells
D
division of sex cells
Explanation: 

Detailed explanation-1: -Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Detailed explanation-2: -Definition. Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). In humans, body (or somatic) cells are diploid, containing two sets of chromosomes (one from each parent).

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: -Karyokinesis is used to describe the nuclear division during the cell replication process. The nuclear division occurs during meiosis and mitosis. Here, the DNA replicates and segregates its genetic material. The chromosomes condense and split into sister chromatids.

Detailed explanation-5: -There are two ways cell division can happen in humans and most other animals, called mitosis and meiosis. When a cell divides by way of mitosis, it produces two clones of itself, each with the same number of chromosomes. When a cell divides by way of meiosis, it produces four cells, called gametes.

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