NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement is true of both mitosis and meiosis?
A
both are involved in asexual reproduction
B
both occur only in reproductive cells
C
the final number of chromosomes is reduced by half in both
D
DNA replication occurs before division of the nucleus
Explanation: 

Detailed explanation-1: -o, the correct statement is ‘In both mitosis and meiosis the replication of DNA and chromosomes occurs at the same stage. ‘

Detailed explanation-2: -DNA replicates before actual cell division so that identical set of the genome of the parent cell is received by each daughter cell.

Detailed explanation-3: -Answer and Explanation: This statement is false. Prior to the start of meiosis II, the dividing cell will be in a stage called interkinesis that resembles interphase. However, unlike interphase, no further DNA replication will occur during this stage.

Detailed explanation-4: -DNA replication takes place in S-phase of the Interphase before Meiosis I begins.

Detailed explanation-5: -Which of the following occur in both mitosis and meiosis? Explanation: The separation of sister chromatids is the only item of the answer choices that occurs in both mitosis and meiosis.

There is 1 question to complete.