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QUESTION

Bicoid ( bcd ) is a maternal effect gene that functions in Drosophila development. (i) Describe the role of maternal effect genes.

2.  Bicoid(bcd) is a maternal effect gene that functions in Drosophiladevelopment. 

(i) Describe the role of maternal effect genes. 

(ii) What will be the phenotype of a fruit fly that is homozygous for a mutated bicoidgene and why (bcd-)?

(iii) Suppose that a male fruit fly that is homozygous for a mutated bicoidgene (bcd-) mated with a wild-type female.  What would be the phenotype of the progeny and why?

(iv) Suppose that a female fruit fly that is homozygous for a mutated bicoidgene (bcd-) mated with a wild-type male.  What would be the phenotype of the progeny and why?

(v) Suppose that a fruit fly larva was destined to develop two posterior ends.  What could a researcher do to allow this larva to develop normally (wild-type phenotype)? 

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