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Principles Of Inheritance And Variation

Question
CBSEENBI12002517
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Test cross in plants of in Drosophila involves crossing 

  • Between two genotypes with recessive trait

  • Between two F1 hybrids

  • the F1 hybrid with a double recessive genotype

  • Between two genotypes with dominant trait

Solution

C.

the F1 hybrid with a double recessive genotype

When F1 hybrid is crossed with a recessive parent then it is called test cross. It is also a backcross. A test cross is done to test whether the dominant parent is heterozygous or homozygous.

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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