In Drosophila, the X chromosome appears to encode four protein factors that activate the early promoter of Sxl. Which of the following factor activate JAK-STAT pathway?

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#Question id: 362

#Unit 1. Molecules and their Interaction Relevant to Biology

A 0.01 M solution of a substance has a pH of 2. What can you conclude about this substance?

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#Question id: 4695

#Unit 3. Fundamental Processes

snRNAs undergo specific post-transcriptional modifications, such as pseudouridinylylation and the addition of methyl groups. These modifications occur in__A__,  where they are directed by__B_.

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#Question id: 12869

#General Aptitude

A hemisphere of iron is melted and recast in the shape of a right circular cylinder of diameter 18 cm and height 162 cm. The radius of the hemisphere is

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#Question id: 28800

#Unit 2. Cellular Organization

Which type of signal is require to the activation of WASp, these signal input is called coincidence detection?

a) surface a protein ActA

b) regulatory phospholipid PIP2

c) small GTP-binding protein Rac1

d) small GTP-binding protein Cdc42

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#Question id: 13106

#Unit 13. Methods in Biology

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.) 

You do each PCR reaction on chromosome 15 and load each one into a separate well of an agarose gel, and then run the gel.

 

 

Why is it that some people only have one band?