Multiple choice

A cross between a hybrid and any of the pure breeding parental types is known as:

  1. test cross

  2. back cross

  3. monohybrid cross

  4. dihybrid cross
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B Correct answer
Explanation

A back cross is defined as crossing a hybrid offspring with one of its pure-breeding parental types. While a test cross (crossing with homozygous recessive) is a specific type of back cross, the general term 'back cross' covers crossing with either parental type. Monohybrid and dihybrid crosses refer to the number of traits being studied, not the type of cross performed.

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