Drosophilia Development Practice Test | Developmental Biology

1. Which of the following materal effect gene products regulate production of anterior structures in Drosophilia embryo?
Bicoids and Nanos
Bicoid and Hunchback
Nanos and Caudal
Bicoid and Caudal

2.In an early cleavage stage wild type Drosophila embryo is injected with bicoid mRNA at the posterior pole then
head structures develop at posterior pole, while the same is inhibited at anterior pole
head strutures form at both poles
duplication of usual posterior structures occurs
head strutures are not performed at posterior pole due to presence of posterior morpgogens

3.The Homologue of Beta -catenin in Drosophila is
Fushi tarazu
Engrailed
Armadillo"
Cubitus interruptus

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4.Engrailed expression in Drosophila melangoster defines
anterior margin of the segment
anterior compartment of each segment
posterior margin of each para segment
posterior compartment of each segment

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5.The change in the state of specification of imaginal disc of Drosophila to that of a different disc type is known as
transduction
transformation
trans determination
trans differentiation

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