Such inheritance in which traits vary quantitatively is called ------
Correct answer: D. Polygenic inheritance
- A. Continuously varying trait
- B. Incomplete dominance
- C. Test cross
- D. Polygenic inheritance
Explanation
Option D is correct since 'polygenic inheritance' is also involved in 'quantitative traits', in which multiple gene loci each contribute in a similar way to the phenotype so that the total number of contributing alleles determines the phenotype. In humans, height, weight, and skin color are examples of quantitative traits.
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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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