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प्रश्न
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
विकल्प
Tt × Tt
TT × tt
Tt × tt
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उत्तर
Tt × tt is a test cross.
A test cross is a cross between F1 hybrid (Tt) and a recessive parent (tt).
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संबंधित प्रश्न
Explain Darwinian theory of evolution with the help of one suitable example.
Name the scientist who influenced Darwin and how ?
How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?
Industrial melanism provides a good example of natural selection. Discuss.
Match List - I with List - II.
| List - I | List II | ||
| (a) | Adaptive radiation | (i) | Selection of resistant varieties due to excessive use of herbicides and pesticides |
| (b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
| (c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
| (d) | Evolution by anthropo- genic action | (iv) | Darwin Finches |
Choose the correct answer from the options given below.
Nature has a way of causing organisms that inherit advantageous traits to survive and reproduce more successfully than the ones that do not. This process is known as ______.
Write drawbacks of Darwin's theory
Industrial melanism was observed in ______.
Charles Darwin explained the origin of species through ______.
Differentiate between Lamarck's Theory and Darwin's Theory.
