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Pure-bred Tall Pea Plants Are First Crossed with Pure-bred Dwarf Pea Plants. the Pea Plants Obtained in F1 Generation Are Then Cross-bred to Produce F2 Generation of Pea Plants. (A) What Do the Plants of F1 Generation Look Like? (B) What is the Ratio of Tall Plants to Dwarf Plants in F2 Generation? (C) Which Type of Plants Were Missing in F1 Generation but Reappeared in F2 Generation? - CBSE Class 10 - Science

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Question

Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in F1generation are then cross-bred to produce F2 generation of pea plants.
(a) What do the plants of F1 generation look like?
(b) What is the ratio of tall plants to dwarf plants in F2 generation?
(c) Which type of plants were missing in F1 generation but reappeared in F2 generation?

 

Solution

(a) All plants in F1 generation will be tall.
(b) In F2 generation, the ratio of tall plants to dwarf plants will be 3:1.
(c) Dwarf pea plants were missing in F1 generation, but reappeared in F2 generation.

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APPEARS IN

 Lakhmir Singh Solution for Biology for Class 10 (2018 to Current)
Chapter 4: Heredity and Evolution
Q: 68 | Page no. 195

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Solution Pure-bred Tall Pea Plants Are First Crossed with Pure-bred Dwarf Pea Plants. the Pea Plants Obtained in F1 Generation Are Then Cross-bred to Produce F2 Generation of Pea Plants. (A) What Do the Plants of F1 Generation Look Like? (B) What is the Ratio of Tall Plants to Dwarf Plants in F2 Generation? (C) Which Type of Plants Were Missing in F1 Generation but Reappeared in F2 Generation? Concept: Rules for the Inheritance of Traits - Mendel’s Contributions.
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