Following statements are given regarding to the genes in Drosophila.

A. The anterior posterior compartment of each segment of drosophila is regulated by the expression of engrailed and wingless genes.

B. The gap genes are activated or repressed by the maternal effect genes, and are expressed in one or two broad domains along the anterior-posterior axis.

C. The transcription patterns of the anterior gap genes are initiated by the different concentrations of the Hunchback and Bicoid proteins.

D. The segment polarity genes encode proteins that are constituents of the delta-notch and Hedgehog signaling pathways.

E. After the segmental boundaries are set, the pair-rule and gap genes interact to regulate the homeotic selector genes, which specify the characteristic structures of each segment.

Which one of following option has all the correct statements?

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#Question id: 19294

#Unit 13. Methods in Biology

The various steps for construction of libraries are ___________

i) Fragmentation of DNA

ii) Isolation of genomic DNA

iii) Amplification

iv) Ligation and introduction to the host

v) Vector preparation

The correct order of construction of libraries is (In the order of starting to ending).

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#Question id: 18383

#Unit 12. Applied Biology

What compounds are considered as recalciterants?

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#Question id: 12186

#Unit 2. Cellular Organization

In 2001, the Nobel Prize in Physiology or Medicine was awarded to three cell cycle scientists. Paul Nurse was recognized for his studies with the fission yeast S. pombe, in particular for the discovery and characterization of the wee1+ gene. What did the characterization of the wee1+ gene tell us about cell cycle control?

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#Question id: 18599

#Unit 13. Methods in Biology

Three guys A, B, and C gets involved in a cycle race. All the guys are competent at the same level. If they race once a day for a week, what is the probability of A winning the race thrice?

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#Question id: 19042

#Unit 13. Methods in Biology

In thin layer chromatography, the stationary phase is made of _________ and the mobile phase is made of _________