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प्रश्न
Discuss any two points due to which Mendel got success in his experiment?
उत्तर
Following are the reasons for Mendel’s success:
- His experiments were carefully planned and involved a large sample.
- He carefully recorded the number of plants of each type and expressed his results as ratios.
- In the pea plant, contrasting characters can be easily recognized.
- The seven different characters in the pea plant were controlled by a single factor each.
- The factors are located on separate chromosomes and these factors are transmitted from generation to generation.
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संबंधित प्रश्न
In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).
What is the phenotypic ratio and genotypic ratio of the above cross in (ii)?
Explain Mendel’s Monohybrid cross. Give an example.
Identify the percentage of recombinants in F2 generation in the following case.
In Morgan's experiment with Drosophila, the yellow-bodied white-eyed female was crossed with a brown-bodied red-eyed male and their F1 progeny were intercrossed.
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
Give the basic features of the mechanism of inheritance.
Give reasons for the appearance of new combinations of characters in the F2 progeny.
If two pea plants having red (dominant) coloured flowers with unknown genotypes are crossed, 75% of the flowers are red and 25% are white. The genotypic constitution of the parents having red coloured blowers will be:
What are the characteristic features of a true-breeding line?
A male plant bearing red flowers was crossed with a female plant bearing yellow flowers. In the F1 generation, all the flowers were orange in colour.
Mention the ratio of red flowers, yellow flowers and orange flowers in the F2 generation.
Enumerate the cause and the characteristic symptom of PKU.
