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प्रश्न
Answer the following question in ‘One’ sentence only:
Define ‘mutation breeding’.
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उत्तर
Mutation breeding, sometimes referred to as “variation breeding”, is the process of exposing seeds to chemicals or radiation in order to generate mutants with desirable traits to be bred with other cultivars.
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संबंधित प्रश्न
A black mouse mates with a brown mouse, and all the offsprings are black.
(a) Why are no brown offsprings produced?
(b) If two of the black offsprings mate with each other what kind of offspring would you expect and in what proportions? Give reason for your answer.
Fill in the following blank with suitable word :
The human forelimb and bat's forelimb are an example of .......... organs whereas an insect's wing and a bat's wing are an example of ........... organs.
Match the terms given in column I with those given in column II :
| Column I | Column II |
| (1) Fossil | (a) A famous evolutionist |
| (2) A theory of evolution | (b) Survival of the fittest |
| (3) Probable ancestor of birds | (c) Petrified remains of prehistoric life |
| (4) Charles Darwin | (d) Father of genetics |
| (5) Gregor Mendel | (e) Archaeopteryx |
Out of the wing of a bird, wing of an insect and the wing of a bat :
which two are analogous organs?
State the meaning of inherited traits and acquired traits. Which of the two is not passes on the next generation? Explain with the help of an example.
List two differences between acquired traits and inherited traits by giving an example of each.
Explain stabilizing, directional and disruptive selection with examples.
Which of the following is the correct pair?
Had Darwin been aware of Mendel’s work, would he been able to explain the origin of variations. Discuss.
While studying the stages in the evolution of man, a well-developed chin is observed in ______.
