Worksheet 4 - specifically refers to the expression of...

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BIO 325: GENETICS WORKSHEET # 4 (February 6 2008) 1. True or False: a. A wild-type allele corresponds to the allele that is responsible for the normal phenotype and is always dominant. b. Mendelian crosses involving phenotypes resulting from alleles at two segregating loci will produce the expected Mendelian dihybrid genotypic and phenotypic ratios. c. The ABO blood group locus in humans provides an example of epistasis. d. A conditional mutant is one whose expression is influenced by some environmental condition. e. Penetrance
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Unformatted text preview: specifically refers to the expression of lethal genes in heterozygotes f. Expressivity is the term used to describe the balanced genetic output from a hemizygous condition. 2. What is the difference between incomplete dominance and codominance? 3. State a significant difference between X-linked and sex-influenced inheritance. Give examples. 4. What distinguishes sex-limited from sex-influenced inheritance? 5. Match the following columns : A. B. C. Incomplete penetrance Complete penetrance Variable expressivity...
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Worksheet 4 - specifically refers to the expression of...

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