What is the cross between the progeny of F 1 and the homozygous recessive parent called? How is it useful?

The cross between the progeny of F 1 and the homozygous recessive parent called a test cross. A test cross is performed between the homozygous recessive and an organism with the dominant phenotype and an unknown genotype. In pea plant, the tall allele is dominant over the short allele. Let's say there is a tall pea plant. To check whether the tall allele is homozygous or heterozygous, we perform a cross between the tall plant and the short plant. If the tall plant is homozygous, then all the plants of F 1 generation will be tall. If the tall plant is heterozygous for the tall allele, then 50% of the plant will be tall, and 50% will be short.

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 11

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Mendel's law of independent assortment holds good for genes situated on the

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Important Questions on Principle of Inheritance and Variation

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 12

Occasionally, a single gene may express more than one effect. The phenomenon is called

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 13

In a certain taxon of insects, some have 17 chromosomes, and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 14

The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in the pedigree analysis is equivalent to

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 15

It is said that Mendel proposed that the factor controlling any character is discrete and independent. His proposition was based on the

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NCERT Exemplar Biology - Class 12>Chapter 5 - Principle of Inheritance and Variation>MULTIPLE-CHOICE QUESTIONS>Q 16

Two genes 'A' and 'B' are linked. In a dihybrid cross involving these two genes, the