AP BIOLOGY

ANIMAL REPRODUCTION AND DEVELOPMENT

SEXUAL REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of cells only contain 23 Chromosomes?
A
Bone cells
B
Skin cells
C
Sex cells
D
Liver cells
Explanation: 

Detailed explanation-1: -Egg and sperm cells have just 23 chromosomes each. That’s half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote.

Detailed explanation-2: -*except sperm cells and egg cells in the ovaries which are “haploid” and have 23 chromosomes (with the 23rd being an X in the eggs, and either an X or a Y in the sperm), and not 46 “diploid” like other cells.

Detailed explanation-3: -Answer and Explanation: It is important that human sperms and eggs have only 23 chromosomes because this way when fertilization occurs, it will form one full diploid cell, which will then divide via mitosis to form a full organism.

There is 1 question to complete.