Explain the effect of cumulative genes on ski | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) According to Davenport,human skin color is determined by polygenic inheritance. In polygenic traits,the phenotype is determined by the cumulative

Vedclass · Accepted Answer

It is an example of polygenic inheritance where each allele contributes to the phenotype.

Vedclass · Answer

(B) According to Davenport,human skin color is determined by polygenic inheritance. In polygenic traits,the phenotype is determined by the cumulative effect of each allele.Let us assume that three genes $A, B,$ and $C$ control skin color. The dominant alleles $A, B,$ and $C$ are responsible for dark skin pigmentation,while the recessive alleles $a, b,$ and $c$ are responsible for light skin pigmentation.$A$ genotype with all dominant alleles $(AABBCC)$ results in the darkest skin color. Conversely,a genotype with all recessive alleles $(aabbcc)$ results in the lightest skin color. Each dominant allele adds a unit of pigment,demonstrating the cumulative effect.

Explain the effect of cumulative genes on skin color.

Similar Questions

The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

In a case of polygenic inheritance,a trait is controlled by $3$ pairs of genes. If an individual is heterozygous for all $3$ alleles,what will be the phenotypic ratio produced by self-crossing?

The kernel color of wheat is determined by three pairs of polygenes. In a cross between $AABBCC$ (dark color) and $aabbcc$ (light color),what will be the proportion of $F_2$ progeny having a kernel color similar to either of the two parents?

Which scientist demonstrated that skin color in humans exhibits polygenic inheritance?

Height is an example of:

Vedclass Test Series

Exam Paper Generator

Online Exam Module