A continuously varying trait is encoded by alleles of two or more different genes located at different loci, all influencing the same trait in an additive way is known as _.
Correct answer: B. Polygenes
- A. Polytraits
- B. Polygenes
- C. Multiple alleles
- D. Different genes
- E. Allele frequency
Explanation
Polygenic inheritance is a type of inheritance where a continuously varying trait is influenced by alleles of two or more different genes located at different loci. These alleles are said to be polygenes, and they all contribute to the phenotype of the individual in an additive way. Examples of traits that are controlled by polygenes include height, skin color, and intelligence.
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About Inheritance
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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