14 Knowledge of the cell cycle control system will be most b

Solution

Q 13

Correct answer: A. Have one half the amount of genetic material as does the original chromosome.

Explanation: A) A chromosome is formed by association of two sister chromatids. Sister chromatids are formed by replication means they have same amount of genetic material. So simply it can be said that one sister chromatid has half of genetic material of a chromosome.

B) Moving of sister chromatids towards opposite pole occur during anaphase not in telophase.

C) When two sister chromatid associate and join to form a chromosome then their point of attachment is known as centromere. So centromere term is associated with chromosome and it`s not associated with chromatid.

D) Cohesin loading occurs duing G1 phase not in prophase.

Q 14

Correct answer: C. Cancer

Explanation: Growth of crop plants, Human growth & development, Cardiovascular disease, reproduction are not directly associated with cell cycle regulation.

During cancer, cell cycle regulation process become damaged. So the check points become nonfunctional. Thus unchecked cell division started. This is the basis of cancer.