PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many chromosomes are in a sex cell?
A
46
B
23
C
26
D
43
Explanation: 

Detailed explanation-1: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.

Detailed explanation-2: -No, sex cells have a half set of chromosomes. 23, one from each pair.

Detailed explanation-3: -The 23 rd pair is called the sex chromosomes. In females, the 23 rd pair is two X chromosomes. In males, the 23rd pair is one X and one Y chromosome.

Detailed explanation-4: -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.