B. thuringiensis is a spore forming bacterium, which produces a crystal protein as parasporic inclusion in the vegetative cell containing the spore.

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#Id: 1015

#Unit 5. Developmental Biology

A fly have two X chromosomes and three sets of autosomes, it is a mosaic.

TLS Online TPP Program

#Id: 1016

#Unit 5. Developmental Biology

In Drosophila, the X chromosome contains genes encoding four transcription factors that activate the critical gene in Drosophila sex determination, the X-linked locus Sex-lethal (Sxl).

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#Id: 1017

#Unit 5. Developmental Biology

Three major RNA targets to which the female-specific Sxl transcript binds: 

Pre-mRNA of Sxl itself

msl2 gene

pre-mRNA of transformer (tra)

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#Id: 1018

#Unit 5. Developmental Biology

The Drosophila doublesex (dsx) gene is active in both males and females, but its primary transcript is processed in a sex-specific manner.

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#Id: 1019

#Unit 5. Developmental Biology

The processes by which the three ectodermal regions are made physically and functionally distinct from one another is called neurulation.

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#Id: 1020

#Unit 5. Developmental Biology

Specification of the ectoderm is accomplished during gastrulation, by regulating the levels of BMP.