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Question
A Mendelian experiment consisted of breeding tall pea plants, bearing violet flowers with short pea plants, bearing white flowers. The progeny was of all violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
A Mendelian experiment consisted of breeding tall pea plants, bearing violet flowers with short pea plants, bearing white flowers. The progeny was of all violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
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Solution
The correct option is C TtWW
The plant in question is homozygous for violet flower because in the progeny all the flowers are of violet colour and heterozygous for tallness because in the progeny half of the plants are short. As the other parent is double recessive, and will not be expressed at any of the two loci. We can easily visualize the result in terms of gametes that will be produced by first plant, i.e., "Tw" which when mixes with "tw" will produce a tall violet plant and "tw" which when mixes with "tw" will produce a dwarf white plant.
The plant in question is homozygous for violet flower because in the progeny all the flowers are of violet colour and heterozygous for tallness because in the progeny half of the plants are short. As the other parent is double recessive, and will not be expressed at any of the two loci. We can easily visualize the result in terms of gametes that will be produced by first plant, i.e., "Tw" which when mixes with "tw" will produce a tall violet plant and "tw" which when mixes with "tw" will produce a dwarf white plant.
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