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. TtWw or b. TtWW. Plz give the explanation too.

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Answer

TtWW   for 50% tall the parent genotype must be Tt becz if it TT then all plant are tall            ......for voilet colour it must be WW becz if it is Ww it the only 50% has voilet colour ....

Answer

The answer given is absolutely correct...its my humble advice that you better keep the humbleness of a student to understand d given explanation fr YOUR OWN question...by d way what wrong do u find in d above explanation??

Answer

Introduction:
In this experiment, tall pea plants with violet flowers were crossed with short pea plants with white flowers. The progeny all bore violet flowers, but almost half of them were short. Based on these observations, we need to determine the genetic makeup of the tall parent.

Explanation:

1. Phenotypes of the parents:
- Tall pea plants with violet flowers (Tall, Violet): This suggests that the tall parent has at least one dominant allele for height (T) and at least one dominant allele for flower color (V).
- Short pea plants with white flowers (Short, White): This suggests that the short parent has two recessive alleles for height (tt) and two recessive alleles for flower color (ww).

2. Progeny phenotypes:
- All progeny have violet flowers: This indicates that the dominant allele for flower color (V) is expressed in all the offspring.
- Almost half the progeny are short: This suggests that the recessive allele for height (t) is expressed in about half of the offspring.

3. Genetic makeup of the tall parent:
- Since all the progeny have violet flowers, the tall parent must have contributed at least one dominant allele for flower color (V) to all the offspring.
- Since almost half the progeny are short, the tall parent must have contributed the recessive allele for height (t) to about half of the offspring.

4. Possible genetic makeup of the tall parent:
- Based on the above observations, the genetic makeup of the tall parent can be depicted as:
- TtWw: This represents a tall plant with at least one dominant allele for height (T) and one dominant allele for flower color (V). It also carries a recessive allele for height (t) and a recessive allele for flower color (w).
- TtWW: This represents a tall plant with at least one dominant allele for height (T) and one dominant allele for flower color (V). It does not carry any recessive alleles for height or flower color.

Conclusion:
Based on the observations that all the progeny have violet flowers and almost half of them are short, the genetic makeup of the tall parent can be depicted as TtWw or TtWW.

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