Question
Question: After mitotic division, a female cell will have A) 44+XX chromosome B) 44+XY chromosome C) 22+...
After mitotic division, a female cell will have
A) 44+XX chromosome
B) 44+XY chromosome
C) 22+X chromosome
D) 22+Y chromosome
Solution
Mitosis is the process of cell division in which one cell divides to form two identical cells. In human beings 23 pairs of chromosomes are present.
Complete answer:
To answer this question we have to know the process of mitosis and how it takes place.
In human beings, we have 22 pairs of autosomes and one pair of sex chromosomes. In the human male cell the chromosomes present is 44+XY. XY represents the sex chromosomes. This Y chromosome is involved in sex determination. The females have two copies of X chromosome. The chromosomes present are 44+XX.
In mitosis, equatorial division takes place which produces daughter cells with the same number of chromosomes as that of the parent cell. This division results in genetically identical cells in which the number of chromosomes is maintained and the composition is similar. If a female cell with 44+ XX chromosomes divides mitotically, it will form 2 daughter cells with similar chromosomes i.e. 44+XX whereas a male cell will mitotically divide to form cells with chromosome 44+XY.
Thus, the correct answer is (A). After A mitotic cell division, a female cell will have 44+ XX chromosomes.
Note: Many organisms reproduce asexually by mitosis in which the offsprings produced are genetically similar. For example amoeba, hydra. The mitosis is responsible for the asexual reproduction or vegetative propagation in plants. Mitosis is responsible for growth and development of cells, cell replacement and regeneration.