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Complementary genes MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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Complementary factor is considered one the most difficult concept.
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7 Questions around this concept.
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MEDIUMModified dihybrid ratio 9:7 observed by Bateson and Punette was found in
In sweet pea plant, purple colour pigment present is:
A sweet pea plant with heterozygous genotype AaBb is test-crossed. If the two genes interact in a complementary manner, what would be the phenotypic segregation w.r.t flower colour?
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Concepts Covered - 1
Complementary factor
- In this type of gene interaction, dominant alleles from both the genes are required for the phenotype.
- If the individual is missing a dominant allele for either one of the two genes, they will be albino.
- This is because the dominant alleles of both the genes are required in the metabolic pathway of pigmentation.
- If any one of the dominant alleles is absent, colour formation will not occur.
- In sweet pea (Lathyrus odoratus), both the genes C and P are required to synthesize anthocyanin pigment causing purple colour.
- But in the absence of any one cannot produce anthocyanin causing white flowers.
- So C and P are complementary to each other for anthocyanin formation.
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