Mendel observed 7 pairs of contrasting characters in Pisum sativum. One of the following is not a part of that. Find out.

Tall and dwarf stem

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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 that are easily recognized and apparently only occur in one of two forms:
1. Flower colour is purple or white,
2. Seed colour is yellow or green,
3. Flower position is axial or terminal,
4. Pod shape is inflated or constricted,
5. Stem length is long or short,
6. Pod colour is yellow or green,
7. Seed shape is round or wrinkled.

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