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Inheritances of skin colour in humans is an example of
[2007]
- a)point mutation
- b)polygenic inheritance
- c)codominance
- d)chromosomal aberration.
Correct answer is option 'B'. Can you explain this answer?
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Inheritances of skin colour in humans is an example of[2007]a)point mu...
Inheritance of skin colour in human is controlled by three genes, A B and C which is polygenic inheritance.
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Inheritances of skin colour in humans is an example of[2007]a)point mu...
Polygenic inheritance refers to the condition, where a phenotype characteristic is determined by more than one gene, generally three or more genes. The sum total of all the genes is expressed in the phenotype. We do not get a distinction between two alternate forms and instead get many variants. Skin colour is an example of polygenic inheritance, which is controlled by three genes. The darkest colour corresponds to the three dominant alleles (AABBCC) and the lightest skin colour corresponds to the presence of recessive alleles (aabbcc). Rest all the genotype combinations lie in between the two. Hence, the correct answer is option 'B'.
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Inheritances of skin colour in humans is an example of[2007]a)point mu...
Polygenic Inheritance: Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three "dominant" capital letter genes (A, B and C) control dark pigmentation because more melanin is produced.
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Inheritances of skin colour in humans is an example of[2007]a)point mutationb)polygenic inheritancec)codominanced)chromosomal aberration.Correct answer is option 'B'. Can you explain this answer?
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