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GENETICS QUESTIONS! HELP NEEDED

Genetics as it applies to evolution, molecular biology, and medical aspects.

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GENETICS QUESTIONS! HELP NEEDED

Postby corluk10 » Mon Dec 15, 2008 12:31 am

1. In some breeds of dogs, a dominant allele controls the characteristic of barking while trailing. In these dogs the allele of another independent gene produces erect ears; it is dominantver the allele for drooping ears. Suppose a dog-breeder wants to produce a pure-breeding strain of droop-eared barkers, but he knows that the genes for silent trailing and erect ears are present in his kennels. How should he proceed?

2. Suppose that an allele, b, of a sex-linked gene is recessive and lethal. A man marries a woman who is heterozygous for this gene. If this couple had a large number of normal children, what would be the predicted sex ratio of these children.

OR if it helps...
it's Chapter 16 - Inheritance in "The Evaluation of Experimental Results"
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Postby MrMistery » Mon Dec 15, 2008 5:03 am

well what have you come up with so far?
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
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