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Question

A cross between two homozygous individuals differing in two characters is called

A
test cross
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B
monohybrid cross
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C
dihybrid cross
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D
reciprocal cross
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Solution

The correct option is C dihybrid cross
A cross between two individuals differing in two characters is called a dihybrid cross.
The following example depicts a dihybrid cross between two plants that differ in two characters (seed color and seed shape)

Monohybrid cross is the cross between two individuals differing in one character.
Test cross is the crossing of the hybrid showing dominant phenotype for a character with a homozygous recessive parent.
It is performed to know whether the individual is homozygous dominant or heterozygous dominant for that trait.
A second cross of the same genotypes in which the sexes of the parental generation are reversed is reciprocal cross. For example, the cross TT (female) X tt (male) is the reciprocal of the cross tt (female) X TT (male). For example, if the pollen (male) from a tall plant is transferred to the stigma (female) of a dwarf plant in one cross, the reciprocal cross would use the pollen of the dwarf plant to pollinate the stigma of the tall plant.

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