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प्रश्न
Mendel crossed tall pea plants with dwarf pea plants in his experiment. Write his observations giving reason on the F1 and F2 generations.
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उत्तर
Mendel crossed tall pea plants with dwarf pea plants.
Mendel's Observation
The F1 generation contained all tall plants. When F1 generation underwent selfing, the trait that was unexpressed in F1 (dwarf) was observed in some F2 progeny. Thus, both traits, tall and dwarf, were expressed in F2 generation in the ratio 3:1.
Mendel proposed that something was being passed unchanged from generation to generation. He called these things factors (presently called genes). Factors contain and carry hereditary information.
He also observed that traits might not show up in an individual but were passed to the next generation.
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संबंधित प्रश्न
"A trait may be inherited, but may not be expressed." Justify this statement with the help of a suitable example.
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What is the genotype of dwarf plants which always produced dwarf offspring?
For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
Explain the mechanism of hereditary changes.
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Rewrite the correct form of the statement by changing the first or last word only:
The inheritable feature of an organism is termed as heredity.
