NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a human has 46 chromosomes in each of its body cells, how many chromosomes will be in each body cell after mitosis?
A
23
B
46
C
92
D
0
Explanation: 

Detailed explanation-1: -In mitosis, a parent cell will divide and form daughter cells having the same number of chromosomes. So, a human vegetative cell having 46 chromosomes will undergo mitosis and form daughter cells that will have 46 chromosomes only as no reduction or addition of chromosomes takes place.

Detailed explanation-2: -Answer and Explanation: If humans have 46 chromosomes in each of their body cells, you would expect to find 46 chromosomes in a daughter cell from mitosis. In the process of mitosis, one parent cell divides to form two identical daughter cells. The daughter cells are also genetically identical to the parent cell.

Detailed explanation-3: -At this point, nuclear division begins, and the parent cell is divided in half, forming 2 daughter cells. Each daughter cell will have half of the original 46 chromosomes, or 23 chromosomes. Each chromosome consists of 2 sister chromatids.

Detailed explanation-4: -This type of cell division is called mitosis, and it produces cells with a total of 46 chromosomes. Beginning soon after fertilization (see below), all of the cells in your body were made this way.

Detailed explanation-5: -Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes). Half come from the mother; the other half come from the father.

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