HW5 key - Biology 202 Fall 2007 Homework 5 Due September 27 or 28 NAME T.A Discussion Section 1(3 pts In cattle the polled(hornless condition is

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Biology 202 NAME: Fall 2007 T.A.: Homework 5 Discussion Section #: Due: September 27 or 28 1. (3 pts) In cattle, the polled (hornless) condition is dominant over the horned phenotype. A particular polled bull is bred to three cows. Cow A, which is horned, produces a horned calf; polled cow B produces a horned calf; and horned cow C produces a polled calf. What are the genotypes of the bull and the three cows, and what phenotypic ratios do you expect in the offspring of these three matings? Bull – Pp Cow A – pp Expect 1 polled : 1 horned Cow B – Pp Expect 3 polled : 1 horned Cow C – pp Expect 1 polled : 1 horned 2. (2 pts) Gray seed color ( G ) in garden peas is dominant to white seed color ( g ). In the following crosses, the indicated parents with known phenotypes but unknown genotypes produced the listed progeny. Give the possible genotype(s) of each female parent based on the data. Parents
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This note was uploaded on 04/02/2008 for the course BIO 202 taught by Professor Howe during the Fall '06 term at New Mexico.

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HW5 key - Biology 202 Fall 2007 Homework 5 Due September 27 or 28 NAME T.A Discussion Section 1(3 pts In cattle the polled(hornless condition is

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