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प्रश्न
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.
उत्तर
Inherited traits: The traits that are passed on from one generation to another are called inherited traits. These involve changes in the DNA.
Acquired traits: Those traits that one acquires during one’s lifetime are called acquired traits. Acquired traits are not passed on to the next generation. These involve changes in the somatic cells.
For example: Education is an acquired trait, it cannot be passed on to the progeny.
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संबंधित प्रश्न
List three distinguishing features, in tabular form, between acquired traits and the inherited traits.
Explain the following:- Natural Selection
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 |
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.
Explain the following :
(a) Speciation
(b) Natural Selection
Very short answer question.
Define the Gene pool
____________ results in variation in gene frequencies within population by chance rather than by natural selection.
What is a connecting link?
The first fossil of human form, discovered was ______.
Define the following term:
Evolution
