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Principles Of Inheritance And Variation

Question
CBSEENBI12046954
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Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called

  • reciprocal cross

  • dihybrid crossn

  • test cross

  • back cross

Solution

C.

test cross

Test cross is a cross made to identify hidden recessive alleles in an individual of unknown genotype. This individual is crossed with one that is homozygous for the allele being investigated (i.e., a homozygous recessive). The homozygous recessive individual may be the parent of the individual being investigated.

Some More Questions From Principles of Inheritance and Variation Chapter

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 ?

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.

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