Axis development is determined by a MATERNAL EFFECT gene in Drosophila.A dominant Bicoid allele is required to set up the correct axis development in flies.bb two loss of function alleles is LETHAL in this MATE EFFECT gene. A female Drosophila named Eustacia had all dead offspring.What is Eustacia's GENOTYPE? A)bb B)BB C)Bb D)BB or Bb E)Bb or bb

Question

Quizplus · Accepted Answer

Since Eustacia had all dead offspring due to a maternal effect gene, and knowing that bb (two loss of function alleles) is lethal in this context, Eustacia must have the genotype bb. This is because the maternal effect gene's phenotype in the offspring is determined by the mother's genotype, not the offspring's genotype.

Axis Development Is Determined by a MATERNAL EFFECT Gene in Drosophila.A