NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Tell whether the given event in cell division happens during Mitosis only, Meiosis only, or Both.DNA replication
A
Mitosis
B
Meiosis
C
Both
D
None of the above
Explanation: 

Detailed explanation-1: -There are two major events that occur in both mitosis and meiosis i.e. the division of nuclear material called karyokinesis and the division of cytoplasm called cytokinesis. Karyokinesis means the process of division of the nucleus during mitosis or meiosis.

Detailed explanation-2: -DNA replication occurs in both mitosis and meiosis. In meiosis, the cell undergoes two divisions, i.e. meiosis I and II. Meiosis I is reduction division and meiosis II is similar to mitosis but DNA replicates only once during meiosis, i.e. before meiosis I in S phase.

Detailed explanation-3: -Which of the following does NOT occur in both mitosis and meiosis? Splitting of homologous pairs of chromosomes.

Detailed explanation-4: -The condensation of interphase chromatin to form the compact chromosomes of mitotic cells is a key event in mitosis, critical in enabling the chromosomes to move along the mitotic spindle without becoming broken or tangled with one another.

There is 1 question to complete.