Every germ cell will take one chromosome from each pair and these may be of either maternal or paternal origin. When two germ cells combine, they will restore the normal number of chromosomes in the progeny, ensuring the stability of the DNA of the species.
Such a mechanism of inheritance is explained in _______________.

Question

Question

This question was previously asked in

RRB Group D 26 Sept 2022 Shift 2 Official Paper

Answer 1

The correct answer is 'the results of the Mendel's experiments'.

Key Points

Genes are present as units in a DNA called chromosomes now for a gene there are two chromosomes.
Hence the male parent will give two chromosomes and the female parent will give two chromosomes the germ cell chooses one chromosome from the male parent and one chromosome from the female parent.
As a gene has two chromosomes the chosen female chromosome and the male chromosome will make a single gene for a gem cell.
Hence this is how a gem cell makes one gene from two gene sets.

Additional Information

Mutation can occur due to the radiation or chemical change in the environment.
Variation in chromosomal number can occur by addition of a part of a chromosome or by losing one part.
Speciation can occur when a group of a species seperates and produce some new characteristic.