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Coat color in cats is determined by genes at several different loci. At one locus on the X chromosome, one allele (X) encodes black
Coat color in cats is determined by genes at several different loci. At one locus on the X chromosome, one allele (X) encodes black fur and another allele (X) encodes orange fur. Females can be black (X*X"), orange (XX), or a mixture of orange and black called tortoiseshell (X*X). Males are either black (X*Y) or orange (XY). Bill has a female tortoiseshell cat named Patches. One night, Patches escapes from Bill's house, spends the night out, and mates with a stray male. Patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. What are the genotypes of Patches, the stray male, and the kittens? X'Y XY Patches Stray Male X*X* X*X Orange Male Kitten Black Male Kitten Tortoiseshell Female Kitten Orange Female Kitten
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