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Principles of Inheritance and Variation
Mendel's Experiments: Types of Crosses
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Concepts tested
- Reciprocal cross
All Questions
2003 AIPMT 1 question
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Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as : -In a reciprocal cross, the same two parents are crossed twice, with their sexes exchanged. Example: tall (female) × dwarf (male), and dwarf (female) × tall (male).
Mendel used reciprocal crosses and found the same results, showing that the traits he studied were not affected by which parent was male or female (i.e. they were not sex-linked or cytoplasmic).
A test cross is a cross of an individual with a homozygous recessive parent; a dihybrid cross involves two characters.
So such crosses are called reciprocal crosses.