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Question
Assertion: Height in pea plants is controlled by the efficiency of enzymes and is thus genetically controlled.
Reason: Cellular DNA is the information source for making proteins in the cell.
Options
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false.
Assertion is False but Reason is true.
Solution
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
RELATED QUESTIONS
Suppose you are given two pairs of contrasting characters: Seed colour → yellow and green , seed coat → round and wrinkled.
Fill in the following table to show that F2 generation according to the principle of independant assortment as given by Mendel.
| Selfing among hybrids of F1 | RY | Ry | rY | ry |
| RY | ||||
| Ry | ||||
| rY | ||||
| Ry | ||||
| F2 generation |
Choose the correct answer:
Mendel used ______ pairs of a characters for his experiments.
Explain the following term : Pedigree chart
The crossing of F1 to homozygous recessive parent is called ______.
When two genetic loci produce identical phenotypes in cis and trans position, they are considered to be ______.
Law of independent assortment can be explained with the help of ______.
Independent inheritance of two separate traits, shape and colour of seeds in Mendel’s cross on pea plants resulted in a observable ratio of ______.
Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be ______.
Enlist the steps of controlled cross pollination. Would emasculation be needed in a cucurbit plant? Give reasons for your answer.
Mendel blended his knowledge of science and mathematics to keep count of the individuals exhibiting a particular trait in each generation. He observed a number of contrasting visible characters controlled in pea plants in a field. He conducted many experiments to arrive at the laws of inheritance.
- What do the F1 progeny of tall plants with round seeds and short plants with wrinkled seeds look like?
- Name the recessive traits in the above case.
- Mention the type of the new combinations of plants obtained in F2 progeny along with their ratio, if F1 progeny was allowed to self-pollinate.
OR
If 1600 plants were obtained in F2 progeny, write the number of plants having traits:
- Tall with round seeds.
- Short with wrinkled seeds.
Write the conclusion of the above experiment.
