Campbell Biology: Concepts & Connections (9th Edition)
Campbell Biology: Concepts & Connections (9th Edition)
9th Edition
ISBN: 9780134296012
Author: Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan, Jane B. Reece
Publisher: PEARSON
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Chapter 9, Problem 16TYK

In 1981, a stray black cat with unusual rounded, curled-back ears was adopted by a family in Lakewood, California. Suppose you owned the first curl cat and wanted to breed it to develop a true-breeding variety. Describe tests that would determine whether the curl gene is dominant or recessive and whether it is autosomal or sex-linked. Explain why you think your tests would be conclusive. Describe a test to determine that a cat is true-breeding.

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In Alaskan Malamute dogs, an autosomal recessive allele causes a condition in which the cartilage in the front legs fails to develop properly. This results in a type of dwarfism. Dogs with the dominant wild-type allele are of normal height. In the same breed of dogs, there is an autosomal dominant allele that codes for a curled tail and a recessive allele that codes for an uncurled tail. Show the possible genotypes for the offspring of a dog heterozygous for height and tail curl crossed with a dog recessive for both traits. Your answer must include the use of a Punnett square and a legend indicating the allele symbols used.
A breeder is interested in a new coat colour in mice. This trait is controlled by a single autosomal gene (Gene T) with two alleles. The T-allele results in a yellow coat colour, while the recessive allele causes a cream coat colour. The breeder has a yellow mouse. Can you suggest how the breeder can determine the genotype (TT or Tt) of his mouse in a single cross? Describe this cross and provide details on how you would interpret the results.
Consider a cross between a Brown furred dog and a Yellow furred dog. All the puppies born from these parents are yellow furred. Crossing the F1 yellow furred sons and F1 yellow furred daughters produces a 3:1 ratio of yellow furred dogs (3) to brown-furred dogs (1) in the F2 generation. True or False: this tells you that brown fur color in this dog species is inherited in an autosomal recessive manner. is it true or false?
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY