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Principles Of Inheritance And Variation

Question

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What is a dihybrid cross ?

Solution

Dihybrid cross. A cross in which two characters are taken into consideration is called dihybrid cross. It involves cross between plants differing in two traits For eg. - A cross between a pea plant with round and yellow seeds (RRYY) and a pea plant with wrinkled and green seeds (rryy) is considered to be a dihybrid cross as it involves two traits seed shape and seed color.

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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