1. You are given tall pea plants with yellow seeds whose genotype… - Vidyadip

Question

You are given tall pea plants with yellow seeds whose genotypes are unknown. How would you find the genotype of these plants? Explain with the help of cross.
Identify a, b and c in the table given below:

S. No.	Pattern of inheritance	Monohybrid F₁ phenotypic expression
i.	Co-dominance	a
ii.	b	The progeny resembled only one of the parents
iii.	Incomplete dominance	c

✓

Answer

The given plant has to be crossed with a dwarf plant with green seeds.

Tallness and yellow seeds are dominant traits whereas dwarfness and green seeds are recessive traits.

If the progeny consists of tall plants with yellow seeds, the given plant is homozygous. (Cross 1)

If the progeny shows four phenotypes in the ratio of 1 : 1 : 1 : 1, the given plant is heterozygous for both the traits. (Cross 2)

a - Both the dominant forms of a trait are expressed in the individual.
b- Dominance
c- The phenotype is intermediate between the two parental forms of the trait.

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