How many types of contrasting characters did Mendel select for his breeding experiments in garden pea?
A
One
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B
Two
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C
Five
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D
Seven
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Solution
The correct option is D Seven
Mendel chose seven pairs of contrasting traits, namely plant height, flower position, pod colour, pod shape, seed colour, seed shape and flower colour. The axial flower position was recessive to the terminal position. Green seed and wrinkled seeds were recessive to yellow and round seeds; yellow, constricted pods were recessive to green and full pods. Dwarf stem and white flowers were recessive to tall stem and violet flowers. Thus, the correct answer is option D.