Which of the following best describes a test cross?

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Question: Which of the following best describes a test cross?

Options:

Correct Answer: Crossing an individual with an unknown genotype with a homozygous recessive

Solution:

A test cross involves crossing an individual with an unknown genotype with a homozygous recessive individual to determine the genotype of the former.

Which of the following best describes a test cross?

Which of the following best describes a test cross?

Correct Answer: A test cross involves crossing an individual with an unknown genotype with a homozygous recessive individual.

Step 1: Understand that a test cross is a genetic tool used to determine the genotype of an individual.
Step 2: Identify the individual with the unknown genotype that you want to test.
Step 3: Find a homozygous recessive individual. This means this individual has two recessive alleles for a trait.
Step 4: Cross (mate) the individual with the unknown genotype with the homozygous recessive individual.
Step 5: Observe the offspring from this cross.
Step 6: Analyze the traits of the offspring to infer the genotype of the original individual.

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