When two parents are crossed, the offspring are referred to as:(a) recessives (b) test cross (c) F₁ generation (d) F₂ generation

Academic Biology NCERT Class 10

Correct Answer: (c) F1 generation

Explanation:

When two parents are crossed, the offspring will be referred to as the F1 generation.

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Updated on: 21-Mar-2023

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Which of the following may be used to obtain an F2 generation?(a) allowing flowers on a parent plant to be self-pollinated(b) allowing flowers on an F1 plant to be self-pollinated(c) cross-pollinating an F1 plant with a parent plant(d) cross-pollinating two parent plants
Pure-bred pea plants A are crossed with pure-bred pea plants B. It is found that the plants which look like A do not appear in F1 generation but re-emerge in F2 generation. Which of the plants A and B are: (i) tall, and (ii) dwarf? Give reason for your answer.
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A person first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only A-B type of seeds were produced in the F1 generation. When F1 generation pea plants having A-B type of seeds were cross-bred by self-pollination, then in addition to the original round-yellow and wrinkled-green seeds, two new varieties A-D and C-B type of seeds were also obtained.(a) What are A-B type of seeds? (b) State whether A and B are dominant traits or recessive traits. (c) What are A-D type of seeds? (d) What are C-B type of seeds? (e) Out of A-B and A-D types of seeds, which one will be produced in (i) minimum numbers, and (ii) maximum numbers, in the F2 generation?
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In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2 generation will be:(a) 1:3 (b) 3:1 (c) 1:1 (d) 2:1\n36698"

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