Two nonallelic genes produces the new phenotype when present together but fail to do so independently then it is called:
Correct answer: D. Complementary gene
- A. Epistasis
- B. Polygene
- C. Non complementary gene
- D. Complementary gene
Explanation
Complementary genes are two nonallelic genes that interact in such a way that they produce a new phenotype when present together, but fail to do so when independent. This synergistic effect is crucial for the expression of specific traits.Epistasis involves one gene masking the effect of another, which is different from the cooperative effect seen in complementary genes.Polygene refers to multiple genes contributing to a single quantitative trait, rather than the specific interaction described.Non-complementary genes do not interact synergistically to produce new phenotypes as complementary genes do.
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Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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