Question

test is performed to know whether the given plant is homozygous dominant or heterozygous.

Name the test and phenotypic ratio of this test for a monohybrid cross​

Answer 1

A cross is made between hybrid and homozygous recessive individual is called Test cross. It is used to determine, whether it is homozygous or heterozygous and also type of gametes produced during fertilization. So, the correct option is 'to determine whether F1 plants are homozygous or heterozygous'.

Answer 2

A recessive plant is taken and crossed with the plant for determining whether it is heterozygous or homozygous dominant.

Explanation:

• If there is the formation of  all dominant offspring then it is sure that the plant with whom we have crossed is an example of homozygous dominant.

• However if there is formation of both dominant and recessive characters in the offspring in the second generation then it is a heterozygous plant. The phenotypic ratio of a monohybrid cross is 3 : 1. This can be found out by drawing punnett square.

To know more,

State and explain the law of dominance with suitable example ..

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