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A testcross is a way to determine ________.a. phenotypeb. genotypec. both a and b
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Text solutionVerified
Key Concepts: Genetics, Testcross, Phenotype, Genotype
Explanation:
A testcross is a way to determine the genotype of an individual with a dominant phenotype. It involves crossing the individual with a homozygous recessive individual. If any of the offspring show the recessive trait, this means that the individual with the dominant phenotype is heterozygous for that trait. By knowing the ratio of dominant to recessive phenotypes in the offspring, we can determine the genotype of the tested individual.
Step by Step Solution:
Step 1. Observe the individual with a dominant phenotype.
Step 2. Cross the individual with a homozygous recessive individual.
Step 3. Observe the offspring.
Step 4. If any of the offspring show the recessive trait, then the individual with the dominant phenotype is heterozygous for that trait.
Step 5. Determine the genotype of the individual based on the ratio of dominant to recessive phenotypes in the offspring.
Final Answer:
b. genotype
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Question Text | A testcross is a way to determine ________.a. phenotypeb. genotypec. both a and b |
Topic | All topics |
Subject | Biology |
Class | Class 11 |
Answer Type | Text solution:1 |