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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
Explain how, characteristics (or traits) are inherited through genes.
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.
A population of red beetles lives in green bushes in a garden. Once during the process of breeding, a green beetle is produced.
(a) State whether the change in colour of beetle is a process of evolution or not.
(b) Can the new colour of green beetle be passed on to its next generations?
(c) What will be the advantage (if any) of the green colour to the beetle?
(d) State whether the production of green colour involved a change in genetic material or not.
Out of the wing of a bird, wing of an insect and the wing of a bat :
which two are analogous organs?
Give one example each of characters that are inherited and the ones that are acquired in humans. Mention the difference between the inherited and the acquired characters.
Define Organic evolution.
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
Had Darwin been aware of Mendel’s work, would he been able to explain the origin of variations. Discuss.
The chronological order of human evolution from early to recent stages is ______.
Define the following term:
Evolution
