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A Mendelian experiment consisted of bree...

A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore 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

T TWW

B

T Tww

C

TtWW

D

TtWw

Text Solution

Verified by Experts

The correct Answer is:
c
The genetic make-up of the tall parent can be depicted as TtWW. Since, all the progeny bore violet Flowers, it means that the tall plant having violet flowers has WW genotype for violet flower colour.
Since the progeny is both tall and short, the parent plant was not a pure tall plant. Its genotype must be Tt. Therefore, the cross involved in the given question is
`TtWWunderset(TtWw-t tWw)underset(darr)xxt tww`
Therefore, half the progeny is tall, but all of them have violet flowers.
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A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the results in F_(1) progeny ?

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Knowledge Check

  • In a Mendelian experiment, breeding of tall pea plants (TT) bearing violet flowers (WW) was done with short pea piants (tt) bearing white flowers (ww). The progeny all bore violet flowers, but almost half of them were short. The genetic make-up of the tall parent can be 1. TTWW 2. TTWW 3. TUWW 4. TUWW Which of these make-ups is/are correct ?

    A
    1 and 2 only
    B
    2 and 3 only
    C
    4 only
    D
    3 only

  • Assertion: A geneticist crossed a pea plant having violet flowers with a pea plant with white flowers, he got all violet flowers in first generation. Reason: White colour gene is not passed on to next generation.

    A
    Both A and R are true, and R is correct explanation of the assertion.
    B
    Both A and R are true, but R is not the correct explanation of the assertion.
    C
    A is true, but R is false.
    D
    A is false, but R is true.

  • A pea plant parent having violet coloured flowers with unknown genotype was a plant having white coloured flowers in the progeny 50% of the flowers were violet and 50% were white. The genotype constitution of the parent having violet coloured flower was:

    A
    homozygous
    B
    merozygous
    C
    hemizygous
    D
    heterozygous

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