Question

Q. 12 Answer the following questions:
(1) Define heredity. Explain the mechanism of
hereditary changes.
Ans. (1) Heredity. Heredity is the process by
which the biological characters from parental
generation are transmitted to the next generation
through genes.
(2) The mechanism of hereditary changes:
(i) Mutation : Sudden change in the parental
ONA can cause mutations. This results into changes
n the hereditary characters.
(ii) At the time of meiosis, the crossing over takes
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Answer 1

Answer:

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