If two alleles for eye color Y and B Olivia D'Ambrogio @Saylor.org

Question 111 / 120: If two alleles for eye color (Y and B, representing yellow and blue, respectively) in flies show incomplete dominance, and a third allele is recessive (o), what would be the approximate proportions of offspring eye phenotype for a cross between a yellow-eyed male (Yo) and a blue-eyed female (BB)?

A All green-eyed offspring

B 1/2 green, 1/2 blue

C 1/4 blue, 1/2 green, 1/4 yellow

D 1/2 yellow, 1/2 blue

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Evolutionary Biology & Ecology BIO102

Author:

Dr.Olivia D'AmbrogioLecturer

Saylor.org

USA

Access: Public Instant Grading

Attribution: Olivia D'Ambrogio Introduction to Evolutionary Biology and Ecology. (The Saylor Academy 2014), http://www.saylor.org/courses/bio102/ (Accessed 16 May, 2014). License: Creative Commons BY-NC-ND

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