Assignment 1 key

Assignment 1 key - Assignment 1 Key General Genetics Spring...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Assignment 1 Key, General Genetics, Spring, 2008 To answer the following question please use the lecture ppt for Chapter 1 and the text (and your own thinking). Please explain your answers. 1. There is a gene, PAH , that codes for a protein (in this case, an enzyme), phenylalanine hydroxylase (PAH). a) Which chemical reaction does PAH catalyze? PAH catalyzes the breakdown of phenyalanine to tryrosine. (See also Figure 13.1) b) What is the main source of phenylalanine in the diet? Dietary protein either from plants or animals is by far the main source. Aspartame (Nutrasweet) could be a minor source for individuals that use products with that sweetener. c) About how many alleles are present at the PAH gene locus? Does only one of these alleles code for a functional enzyme and all the rest code for non-functional enzymes? At least three hundred alleles are known for the PAH gene locus. There is more than one allele that codes for a functional enzyme and there are many alleles that code for proteins that are not fully functional. Some alleles do not code for any enzyme at all.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/27/2009 for the course BIO 340 taught by Professor Steele during the Spring '09 term at Arizona.

Page1 / 3

Assignment 1 key - Assignment 1 Key General Genetics Spring...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online