Male cats with a tortoiseshell phenotype do not usually occur. Explain why.

Concepts of Biology
1st Edition
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:Samantha Fowler, Rebecca Roush, James Wise
Chapter8: Patterns Of Inheritance
Section: Chapter Questions
Problem 2ACQ: Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are...
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(b)
Male cats with a tortoiseshell phenotype do not usually occur. Explain why.
A tortoiseshell female was crossed with a black male. Use a genetic diagram to
(c)
show all the possible genotypes and the ratio of phenotypes expected in the
offspring of this cross.
Use X to indicate the allele G on an X chromosome.
Use XB to indicate the allele B on an X chromosome.
Genotypes of offspring
Phenotypes of offspring
Ratio of phenotypes
Page 2
PhysicsAndMaths Tutor.com
Transcribed Image Text:(b) Male cats with a tortoiseshell phenotype do not usually occur. Explain why. A tortoiseshell female was crossed with a black male. Use a genetic diagram to (c) show all the possible genotypes and the ratio of phenotypes expected in the offspring of this cross. Use X to indicate the allele G on an X chromosome. Use XB to indicate the allele B on an X chromosome. Genotypes of offspring Phenotypes of offspring Ratio of phenotypes Page 2 PhysicsAndMaths Tutor.com
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