Advertisements
Advertisements
प्रश्न
In order to obtain the F1 generation Mendel pollinated a pure-breeding tall plant with a pure breeding dwarf plant. But for getting the F2 generation, he simply self-pollinated the tall F1 plants. Why?
उत्तर
Genotype of 50% of the offspring would resemble one parent and the rest the other parent. All the F1 offsprings of the cross are heterozygous so allowing self-pollination is sufficient to raise F2 offspring. Also, he intended to understand the inheritance of the selected trait over generations.
APPEARS IN
संबंधित प्रश्न
In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).
State Mendel’s Law of Dominance.
Choose the correct answer:
If any of Mendel's characters were linked; one would have been unable to derive.
Choose the correct answer:
A cross where two pairs of alleles are considered is a ____________
Answer the following question.
Compare in any three ways the chromosomal theory of inheritance as proposed by Sutton and Bovery with that of experimental results on pea plant presented by Mendel.
Why did Mendel select pea plants for his experiment?
Give Reason:
In the honey bee, the female is diploid and the male is haploid.
Which one of the following traits of garden pea studied by Mendel was a recessive feature?
A heterozygous violet-flowered pea plant is crossed to another homozygous violet- flowered pea plant. What percent of the progeny plants will have the recessive trait, i.e., white flowers?
Read the following and answer from given below:
Prashant wanted to find the genotype of a pea plant bearing purple coloured flowers in his kitchen garden. For this, he crossed purple-flowered plants with white-flowered plants. As a result, all plants which were produced had purple flowers only. Upon selfing these plants, 75 purple flower plants and 25 white flowers plants were produced. Now, he can determine the genotype of a purple-flowered plant by crossing it with a white-flowered plant.
In white-flowered plants, the allele is expressed in ______
A green stemmed tomato plant denoted by (GG) is crossed with a tomato plant with purple stem denoted by (gg).
- What colour of the stem would you expect in their F1 progeny?
- In what ratio would you find the green and purple coloured stem in plants of F2 progeny?
- What conclusion can be drawn for the above observations?
