Mendel observed 7 pairs of contrasting characters in Pisum sativum. Which one of the following is not a part of that?

Tall and dwarf

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Yellow and green seed colour

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Terminal and axial flower

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Smooth and rough stem

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Solution

The correct option is D Smooth and rough stem
Mendel observed seven traits which are easily identified and occur in one of two forms:

1. Flower color is purple or white,

2. Seed color is yellow or green,

3. Flower position is axial or terminal,

4. Plant height tall and dwarf.

5. Stem length is long or short,

6. Pod color is yellow or green,

7. Seed shape is round or wrinkled.

There is no such trait-like rough and smooth stem.

The correct Option is D.

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Question 34
Give the pair of contrasting traits of the following characters in pea plant and mention which is dominant and recessive.
(i) yellow seed (ii) round seed (iii) green seed (iv) wrinkled seed.

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