LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a species had 50 chromosomes in its body cells, how many would be found in its gametes?
A
100
B
25
C
50
D
None of the above
Explanation: 

Detailed explanation-1: -A body cell contains 50 chromosomes. This is the diploid number of chromosomes. The gametes are haploid, which means they contain half the number of chromosomes as the body cells. Therefore, the number of chromosomes in the gametes will be 25.

Detailed explanation-2: -Answer and Explanation: In mitosis, the resulting daughter cell contains an equal number of chromosomes as the original cell. Therefore, if a cell has 50 chromosomes, in the end, the daughter cells will also have 50 chromosomes each. Unlike in meiosis, where the number of chromosomes is halved.

Detailed explanation-3: -Explanation: Eggs and sperm are reproductive cells called gametes. Then both the sperm and the egg (ova) would have 50 chromosomes. All other body cells would have 2(50) or 100 chromosomes.

Detailed explanation-4: -f) A dog sperm or egg has 39 single chromosomes.

Detailed explanation-5: -Answer and Explanation: If a diploid cell from the hypothetical organism has 20 chromosomes, the haploid gamete would have 10. Diploid cells are those which have two sets of each chromosome, one set from each parent. If the diploid cells have 20 chromosomes, this means they have 10 pairs.

There is 1 question to complete.