Home
Class 12
BIOLOGY
Assertion:Aneuploidy may be of hypoploid...

Assertion:Aneuploidy may be of hypoploidy or hyperploidy type.
Reason:Monosomy lacks one pair of chromosomes.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C

Aneuploidy is the presence of abnormal number chromosomes in a cell. It is due to the loss of one or more chromosome called hypoploidy or gain of one or more chromosome called hyperploidy. Monosomy is due to loss of one chromosome `(2_n -1). `
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: The sorus of pteridium is of coenosorus type. Reason: Pteridium lacks sori.

Assertion :-In birds, the females have one Z and one W chromosome, whereas male have a pair of Z-chromosomes besides autosomes. Reason:- In birds, sex of the offsprings is decided by the temprature of surroundings when they are released.

Assertion :- Colchicing induces polyploidy Reason : Colchicine causes disjucation of chromosomes.

Aneuploidy which results in loss of a complete homologous pair of chromosomes is

Assertion : Euglena is an obligatory phototrophs. Reason : Euglena lacks nuclear membrane.

Assertion:During anaphase-II, the chromatids of a chromosome separate. Reason: Centromere of a mitotic chromosome divides during anaphase.

One genome is which type of set of Chromosomes?

Assertion :-Each pair of chromosome segregete independently of another pair. Reason :- Each gene pair also segregates independently of another pair.