In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?

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#Question id: 4731

#Part-A Aptitude & General Biotechnology

A pure-breeding strain of squash that produced disk-shaped fruits was crossed with a pure breeding strain having long fruits. The F1 had disk fruits, but the F2 showed a new phenotype, sphere, and was composed of the following proportions

Disk  384            

Sphere 96

 Long  32

What is reason for F2 phenotype?

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#Question id: 18957

#Part-A Aptitude & General Biotechnology

A DNA fragment of 5000bp needs to be isolated from E.coli (genome size 4x103kb) genomic library. The minimum number of independent recombinant clones required to represent this fragment in genomic library are

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#Question id: 18657

#Part-A Aptitude & General Biotechnology

In SDS PAGE band sharpening effect are observed, this band sharpening effect arises due to the

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#Question id: 11458

#Part-A Aptitude & General Biotechnology

A person able to hear only low-frequency sounds would probably have which of the following structural problems in the ear?

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#Question id: 11142

#Part-B Specialized Branches in Biotechnology

A researcher uses the chemical inhibitor cyanide to reduce ATP production in a neuron. What would be one effect of preventing ATP production?