AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many chromosomes are in one complete human sex cell?
A
42
B
46
C
21
D
23
Explanation: 

Detailed explanation-1: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

Detailed explanation-2: -Sex cells have one set of chromosomes; body cells have two.

Detailed explanation-3: -Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.

Detailed explanation-4: -46 is generally considered Because each human originates from a single cell. All other cells are just copies of that single cell. And that single original cell, the fertilized egg, the zygote, has 46 chromosomes.

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