of the dominant alrticular type of genetic cross with a parent that has the phen
ID: 219762 • Letter: O
Question
of the dominant alrticular type of genetic cross with a parent that has the phenotype eir genotype is unknown. Mating the parent with the makes the test cross. 7. A "test cross" is of genetic dominant allele, but their u unknown genotype with an individual of the recessive phenotype For example, brown (B) hair coat is do minant over yellow (b) in Labrador retrievers. If u cross a brown lab with a yellow lab you will be able to determine the genotype for hair color of the brown lab parent by looking at t he offspring. Explain how this worksExplanation / Answer
Answer:
If the progeny are brown (dominant) and yellow (yellow) in equal proporation, then we can say that the unknown genotype is heterozygous, Bb.
Bb (unknown) x bb (yellow)
If all the progeny are brown (dominant), the unknown genotype is homozygous dominant, BB.
BB (unknown) x bb (yellow)
b B Bb (brown)-50% b bb (yellow)-50%Related Questions
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