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A cross between F(1) hybrid and its hom...

A cross between `F_(1)` hybrid and its homozygous recessive parent is called

A

Test cross

B

Back cross

C

Reciprocal cross

D

All of these

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The correct Answer is:
To solve the question "A cross between F1 hybrid and its homozygous recessive parent is called", we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Terms**: - **F1 Hybrid**: This is the first generation offspring from a cross between two different parental lines. It typically exhibits dominant traits. - **Homozygous Recessive Parent**: This parent has two recessive alleles for a trait (for example, "aa" if "A" is dominant and "a" is recessive). 2. **Identify the Type of Cross**: - When we cross an F1 hybrid (which is heterozygous, for example "Aa") with a homozygous recessive parent (which is "aa"), we are trying to determine the genotype of the F1 hybrid. 3. **Determine the Purpose of the Cross**: - The purpose of this cross is to identify whether the F1 hybrid is homozygous dominant (AA) or heterozygous (Aa). The homozygous recessive parent will only contribute recessive alleles (a). 4. **Name the Cross**: - The specific cross between an F1 hybrid and a homozygous recessive parent is known as a **Test Cross**. This is because it tests the genotype of the F1 hybrid. 5. **Conclusion**: - Therefore, the answer to the question is that the cross between an F1 hybrid and its homozygous recessive parent is called a **Test Cross**. ### Final Answer: The correct answer is **Test Cross**. ---
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