In cats, there is a coat color gene located on the X chromosome which has two alleles—an allele for orange fur and an allele for black. A heterozygous cat has tortoiseshell color (a splotchy mixture of orange and black). Predict the genotypic and phenotypic frequencies among the offspring of the following crosses. Pay careful attention to the sex of the offspring.    Black female X Orange male     Orange female X Black male       Tortoiseshell female X Black male       Tortoiseshell female X Orange male

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In cats, there is a coat color gene located on the X chromosome which has two alleles—an allele for orange fur and an allele for black. A heterozygous cat has tortoiseshell color (a splotchy mixture of orange and black). Predict the genotypic and phenotypic frequencies among the offspring of the following crosses. Pay careful attention to the sex of the offspring. 

 

  1. Black female X Orange male

 

 

  1. Orange female X Black male

 

 

 

  1. Tortoiseshell female X Black male

 

 

 

  1. Tortoiseshell female X Orange male

 

 

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