NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a daughter cell has 50 chromosomes after mitosis, how many chromosomes were in the parent cell?
A
25
B
50
C
100
D
150
Explanation: 

Detailed explanation-1: -If a cell starts mitosis with 50 chromosomes then at the end of mitosis the daughter cells each have 25 chromosomes.

Detailed explanation-2: -Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

Detailed explanation-3: -At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes.

Detailed explanation-4: -When a diploid cell having 48 chromosomes divides, the four haploid daughter cells are produced at the end of meiosis II. Each daughter cell contains half of the chromosomes in number as that of the parent cell. Thus, it can be concluded that daughter cells produced from the parent cell will have 24 chromosomes.

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