How are dominance, co-dominance and incomplete dominance patterns of inheritance different from each other?

Solution

Dominance: is the condition when in a pair of dissimilar factors or alleles, one dominates the other that is one allele expresses itself in the presence or absence of the other allele. For example, the allele for tall trait T is dominant over the trait for dwarfness t.

Co-dominance: Co-dominance is the phenomenon in which both the alleles of a contrasting character are expressed in heterozygous condition. Both the alleles of a gene are equally dominant. ABO blood group system is an example of co-dominance.

Incomplete dominance: Incomplete dominance is a phenomenon in which one allele shows incomplete dominance over the other member of the allelic pair for a character. For example, a monohybrid cross between the plants having red flowers and white flowers in Antirrhinum species will result in all pink flower plants in F₁generation.

Some More Questions From Principles of Inheritance and Variation Chapter

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Principles Of Inheritance And Variation

How are dominance, co-dominance and incomplete dominance patterns of inheritance different from each other?

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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