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Principles Of Inheritance And Variation

Question

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Differentiate incomplete dominance and codominance.

Solution

Differences between Incomplete Dominance and Codominance

Incomplete Dominance	Co-Dominance
(1) Effect of one of the two alleles is more prominent.	(1) The effect of both the alleles is equally prominent.
(2) It produces a fine mixture or intermediate trait of the expression of two alleles.	(2) There is no mixing of the effect of the two alleles.
eg. flower color in Snapdragon.	eg. Co-dominanve of A and B alleles in ABO blood group system.

Some More Questions From Principles of Inheritance and Variation Chapter

Give one example of genetic trait for each of the following in humans : (i) Lethality (ii) Multiple allelism.

What for symbols AA and Aa stand ?

Mention the phenomenon of pleiotropy by giving an example.

Name the plant that shows incomplete dominance in respect of the colour of its flower.

Write the genotypes of man with blood group A.

What is Mendel’s monohybrid phenotypic ratio ?

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

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