AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DNA replication is needed for ____
A
mitosis only
B
meiosis
C
mitosis & meiosis
D
either mitosis or meiosis depending on the type of cell.
Explanation: 

Detailed explanation-1: -In both mitosis and meiosis the replication of DNA and chromosomes occurs at the same stage.

Detailed explanation-2: -Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.

Detailed explanation-3: -Meiosis begins with DNA replication, followed by a pairing of the maternal and paternal chromosomes (homologous pairing) and an exchange of genetic material between chromosomes by recombination (Fig. 1.1. 5).

There is 1 question to complete.