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Q. "Characters resemble among the progeny and also with their parents". The reason is

NTA AbhyasNTA Abhyas 2020

Solution:

The branch of science which deals with the inheritance, as well as the variation of characters from parent to offspring, is called genetics. The process of inheritance involves sexual reproduction, where the fusion of gametes produced from both the parents is observed. Hence, the offspring produced shares the character of both the parents and also the progenies shows resemblances.
The gametes are the haploid structures that are produced by the gonads through the process of gametogenesis. The fusion of gametes is known as fertilisation and this process results in the formation of a diploid zygote. The gametogenesis involves meiosis, a reductional division that is characterised by the recombination process. Hence, sexual reproduction induces variation in the offsprings.