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Title: The sex of birds, some insects, and other organisms is determined by a ZW chromo Post by: nite_n_day on Apr 15, 2014 The sex of birds, some insects, and other organisms is determined by a ZW chromosomal arrangement in which the males have like sex chromosomes (ZZ) and females are ZW (similar to XY in humans). Assume that a recessive lethal allele on the Z chromosome causes death of an embryo in birds. What sex ratio would result in the offspring if a cross were made between a male heterozygous for the lethal allele and a normal female?
A) 4:1 male to female B) 2:1 male to female C) 3:1 male to female D) 1:2 male to female E) 1:1 male to female Our teacher assigned this from our Essentials of Genetics book Title: Re: The sex of birds, some insects, and other organisms is determined by a ZW chromo Post by: germ on Apr 16, 2014 ---B
Title: Re: The sex of birds, some insects, and other organisms is determined by a ZW chromo Post by: nite_n_day on Apr 16, 2014 Seriously, you're awesome. Let's be friends lol
Title: Re: The sex of birds, some insects, and other organisms is determined by a ZW chromo Post by: germ on Aug 27, 2014 You're welcome.
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