Multiple Choice Questions

Advertisement

The one aspect which is not a salient feature of genetic code is its being

  • degenerate

  • ambiguous

  • universal

  • universal


D.

universal

The genetic code is degenerate, i.e, a given amino acid can be specified by more than one codons.
The genetic code inside the cell medium is said to be non-ambiguous because a particular condon always codes are same amino acid. But in certain rare cases the genetic code is found to be ambiguous, i.e some condon code for different amino acids under different conditions. The genetic code is almost universal.

388 Views

Advertisement

A common biocontrol agent for the control of plant diseases is

  • Baculovirus

  • Bacillius thuringiensis

  • Glomus

  • Glomus

498 Views

Select the correct statement from the ones given below with respect to dihybrid cross. 

  • Tightly linked genes on the same chromosome show higher recombinations

  • Genes far apart on the same chromosome show very few recombinations

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

  • Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones.

318 Views

Which one of the following is an example of ex- situ conservation?

  • Wildlife sanctuary

  • Seed bank

  • Sacred groves

  • Sacred groves

377 Views

The biomass available for consumption by the herbivores the decomposers is called

  • net primary productivity

  • secondary productivity

  • standing crop

  • standing crop

383 Views

Advertisement

Which one of the following palindromic base sequences in DNA can be easily cut at about the middle be some particular restriction enzyme?

  • 5'-CGTTCG -3'
    3'-ATCCTA-5'

  • 5'-GATATG-3'
    3'-CTACTA-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

353 Views

Widal test is used for the diagnosis of 

  • Malaria 

  • pneumonia

  • tuberculosis

  • tuberculosis

294 Views

Which one of the following is used as a vector for cloning the gene into higher organisms?

  • Baculovirus

  • Salmonella typhimurium

  • Rhizopus nigricans

  • Rhizopus nigricans

459 Views

Which one of the following statements is correct with respect to AIDS?

  • The HIV can be transmitted through eating food together with an infected person

  • Durg addicts are least susceptible to HIV infection

  • AIDS patients are being fully cured cent percent with proper care and nutrition

  • AIDS patients are being fully cured cent percent with proper care and nutrition

345 Views

Advertisement

Breeding of crops with high levels of minerals, vitamins and proteins is called

  • somatic hybridization

  • biofortification

  • biomagnification

  • biomagnification

454 Views