Answers to Chapter 5

Answers to Chapter 5 - Answers, Chapter 5 Text Questions...

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Unformatted text preview: Answers, Chapter 5 Text Questions Review the following questions from Chapter 5: 1, 3, 8, 12, 13, 17, 20, 22, 27, and 32. 3. Dominance is the effect of one allele and its gene product (a protein) over another allele and its gene product. Complete dominance is due to the fact that the presence of only one active (usually wild-type) allele is sufficient to yield the wild-type phenotype in an individual. The recessive allele could either produce a protein with less activity or no activity at all (no protein or totally inactive protein). Incomplete dominance is used to describe the phenomenon where a single copy of the wild-type allele leads to a phenotype which has less activity or amount of a certain characteristic (pigment, enzyme activity) compared to individuals with two copies of the wild type allele. Epistasis is a term used to indicate that one gene's product influences the expression of another gene's product. Epistasis is commonly observed in genes that are in a common pathway. For example, there is a gene product....
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This note was uploaded on 03/30/2008 for the course BIOL 2004 taught by Professor Jofalkinham during the Spring '08 term at Virginia Tech.

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