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Questions and Answers
What is the probability of each square in a monohybrid cross?
¼
What is the purpose of a test cross?
To determine the unknown genotype of a parent
What is the genetic relationship between the alleles for black and white coat colours?
The allele for black coat colour is dominant to the allele for white coat colour
What type of parent is used in a test cross?
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What can be inferred about the genotype of the parent pig based on the phenotype of the offspring in a test cross?
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Study Notes
Monohybrid Cross and Probability
- In a monohybrid cross, the probability results in four squares, and each square is considered ¼.
Breeding Prize-Winning Pigs
- A breeder wants to determine the genotype of a pig with a black coat colour, where the allele for black coat colour is dominant to the allele for white coat colour.
Test Cross
- A test cross is a cross between a parent of unknown genotype and a homozygous recessive parent.
- Analyzing the phenotype of the offspring in a test cross provides insight into the unknown genotype of the parent.
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Description
Determine the genotype of a prize-winning pig with a black coat colour, considering the allele for black coat colour is dominant to the allele for white coat colour.
