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  • A Tall plant with Red seeds (both dominant traits) was crossed with a dwarf plant with white seeds. If the segregating progeny produced an equal number of tall red and dwarf white plants, what woul

A Tall plant with Red seeds (both dominant traits) was crossed with a dwarf plant with white seeds. If the segregating progeny produced an equal number of tall red and dwarf white plants, what would be the genotype of the parents?


 

Option: 1

TtRr × TtRR


Option: 2

TtRr × ttrr


Option: 3

TTRR X ttrr

 


Option: 4

TTRR × TtRr


Answers (1)

best_answer

To determine the genotypes of the parents, let's assign symbols to represent the alleles for the traits:

T = Tall (dominant)

t = Dwarf (recessive)

R = Red seeds (dominant)

r = White seeds (recessive)

Given that the segregating progeny produced an equal number of tall red and dwarf white plants, we can infer that the parents are heterozygous for both traits.

The genotype of the tall plant with red seeds (dominant traits) can be represented as TtRr, indicating that it carries one dominant allele for tallness (T) and one recessive allele for dwarfness (t), as well as one dominant allele for red seeds (R) and one recessive allele for white seeds (r).

The genotype of the dwarf plant with white seeds (both recessive traits) can be represented as ttrr, indicating that it carries two recessive alleles for both dwarfness (t) and white seeds (r).

Therefore, the genotypes of the parents are TtRr and ttrr. Hence, the correct answer is option 2.

Posted by

Suraj Bhandari

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