Biology
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.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Chromosomes
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Answer
A is True and R is False.
Explanation
During meiosis, chromosome number is halved. During fertilisation, two haploid gametes/cells fuse to restore normal chromosome count.
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Related Questions
Assertion. The basic structural unit of DNA is nucleotide.
Reason. DNA is composed of repeating nucleosome which are made up of three components - pentose sugar, phosphate group and nitrogenous bases.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
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.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion. Heredity is the basic fundamental unit of Genetics.
Reason. Genes carry hereditary information from the offsprings to their parents.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- 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.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.