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NEET Biology Solved Question Paper 2014

Multiple Choice Questions

51.

Insect pest resistant Bt cotton plant was developed using

somaclonal variation
micropropagation
somatic hybridisation
Transgenic technology

52.

Emasculation ensures cross-pollination in

staminate flower
bisexual flower
neuter flower
pistillate flower

53.

Formation of polysome does not require

rRNA
mRNA
tRNA
snRNA

54.

Genes which are located only in the X-chromosome are known as

epistasis genes
holandric genes
operator genes
antiepistasis genes

55.

Industrial melanism is an

effect of industrial pollution
effect of mutation
evidence of survival of fittest
evidence of favour of natural selection

56.

The concept of hot- spot was first introduced by

Mayer
Simpson
Myers
David

57.

With the rise of water temperature, dissolved oxygen

remains unchanged
increases in amount
decreases in amount
is more available to the aquatic organisms

58.

Intermediate host of malarial parasite is

pig
man
mosquito
larva of mosquito

59.
Which codon is not an indicator of completion of protein synthesis?

UAG

AUG

UAA

UGA

AUG

Stop codon or termination codon is a nucleotide triplet within mRNA that signals a termination of translation. It signals the termination of this process by binding release factors which cause the ribosomal subunits to dissociate, releasing the amino acid chain. There are three stop codons (for RNA/DNA) respectively i.e.,

For DNA :- UAG (amber), UAA (ochre) and UGA (opal)

For RNA :- TAG (amber), TAA (ochre) and TGA (opal).

AUG acts as the strandard start (or initiation) codon for both DNA and RNA respectively.