PATHOLOGY

PATHOLOGY MCQ

CELL DAMAGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True or FalseMutations do not occur during mitosis but they do occur during meiosis
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -This is false mutations can happen during any stage of cell division.

Detailed explanation-2: -Importantly, new mutations also occur during meiosis, at frequencies much higher than during the mitotic cell cycles. These meiotic mutations are associated with genetic recombination and depend on double-strand breaks (DSBs) that initiate crossing over.

Detailed explanation-3: -Mutations may also occur during the processes of mitosis and meiosis when sister chromatids and/or homologous chromosomes are being separated from one another. In nature, mutagenesis, or the process of generating DNA mutations, can lead to changes that are harmful, or beneficial, or have no effect.

Detailed explanation-4: -As opposed to germ-line mutations, somatic mutations occur in cells found elsewhere in an organism’s body. Such mutations are passed to daughter cells during the process of mitosis (Figure 2), but they are not passed to offspring conceived via sexual reproduction.

Detailed explanation-5: -The events that occur in meiosis but not mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.

There is 1 question to complete.