Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.

The female parent is heterozygous

The parents could not have a had a normal daughter for this character

The trait under study could not be colour blindness

The male parent is homozygous dominant

Solution

The female parent is heterozygous

The given pedigree chart shows that both the daughters received the gene from the parents, while son may be normal or affected. It shows that the female parent is heterozygous.

Some More Questions From Principles of Inheritance and Variation Chapter

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

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Principles Of Inheritance And Variation

Some More Questions From Principles of Inheritance and Variation Chapter

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 ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

How many chromosomes are found in human cells ?

Why is male Drosophila regarded as heterogametic ?

What term is used for the two chromatids resulting from the interchange of segments during crossing over ?

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