The F2 progeny from a particular cross exhibit a modified dihybrid ratio of 9 : 7 (instead of 9 : 3 : 3 : 1). What phenotypic ratio would be expected from a testcross of the F1?

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#Question id: 13001

#Section 2: General Biology

Which of the following is incorrect 

a) antiparallel β sheets are frequently found and they are quite more stable because of more no. hydrogen bond presence and linear H bonding pattern.

b) antiparallel β sheets are frequently found and they are quite more stable because of more no. hydrogen bond presence and having distorted H bonding pattern.

c) parallel β sheets are relatively less stable and mostly found in core of protein.

d) parallel β sheets are relatively more stable and mostly found in core of protein.

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#Question id: 13023

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following enzymes are required for end labelling?

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#Question id: 13024

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Inset and the vector can be ligated if they are digested by a pair of –

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#Question id: 13025

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which enzyme is used for homopolymer tailing?

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#Question id: 13026

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

A blunt ended insert can not be ligated with a blunt ended vector by means of which of the followings:-

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#Question id: 13027

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following genes in the T-DNA doesn’t help in the proliferation of the crown gall disease in the plants mediated by Agrobacterium ?