Multiple Choice QuestionsInsect pest resistant Bt cotton plant was developed using
somaclonal variation
micropropagation
somatic hybridisation
Transgenic technology
Emasculation ensures cross-pollination in
staminate flower
bisexual flower
neuter flower
pistillate flower
Genes which are located only in the X-chromosome are known as
epistasis genes
holandric genes
operator genes
antiepistasis genes
A.
epistasis genes
According to Barr body concept (applicable only for X-chromosomes) genes present on the Barr body (inactive X-chromosome) are at times hypostatic due to presence of epistatic genes on the active X-chromosome. Thus, epistasis gene is the most appropriate option. Genes which are located on X-chromosome only are called hologynic genes and those found on Y-chromosome only are called holandric genes.
Epistatis is the phenomenon where the effect of one gene is dependent on the presence of one or modifier genes. Operator gene in Lac operon, is a segment to which a repressor binds.
Industrial melanism is an
effect of industrial pollution
effect of mutation
evidence of survival of fittest
evidence of favour of natural selection
With the rise of water temperature, dissolved oxygen
remains unchanged
increases in amount
decreases in amount
is more available to the aquatic organisms
'Kyoto Protocol' is a multination international treaty for
phasing out green house gases
controlling ozone destroying substances
management of hazardous wastes
conservation of biodiversity
Switch
