Assertion. Centrosome is the point of attachment of two chromatids of a chromosome.

Reason. Centrosome initiates and regulates the process of cell division as it helps in the formation of spindle fibres.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. Meiosis is the kind of cell-division which occurs during gamete formation in the gonads.

Reason. During meiosis, chromosome number remains the same in parent cell and daughter cells which is very significant to maintain the identity of the organism.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. Karyotype is the division of nucleus during cell-division.

Reason. Karyon means nucleus and type explains the number, shape and size of the chromosome.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. Dominant alleles can express themselves only in homozygous condition.

Reason. Dominant alleles support recessive alleles and allow them to express, even in heterozygous condition.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.