Sacred groves are specially useful in
Generating environmental awareness
Preventing soil erosion
Year-round flow of water in rivers
Year-round flow of water in rivers
The rate of formation of new organic matter by rabbit in a grassland is called
net productivity
secondary productivity
net primary productivity
net primary productivity
Read the following four statements:
1. Colostrum is recommended for the new born because it is rich in antigens.
2. Chikengunya is caused by a Gram negative bacterium.
3. Tissue culture has proved useful in obtaining virus-free plants.
4. Beer is manufactured by distillation of fermented grape juice.
How many of the above statements are wrong?
Two
Three
Four
Four
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells).
Both sense and anti-sense RNA
A particular hormone
An antifeedant
An antifeedant
Biolistics (gene-gun) is suitbale for
Disarming pathogen vectors
Transformation of plant cells
Constructing recombinant DNA by joing whith vectors
Constructing recombinant DNA by joing whith vectors
B.
Transformation of plant cells
In biolistic or gene gun method 1-2 g tungsten or gold particle (called microprojectile) coated with DNA to be used for transformation are accelerated to velocities which enable their entry into plant cells/nuclei. This technique has general applicability to plant species and can be used to deliver DNA into virtually all tissues.
In genetic engineering, the antibiotics are used
as selectable markers
to select healthy vectors
as sequences from where replicaton starts
as sequences from where replicaton starts
The idea of mutations was brought forth by
Hugo de Vries, who worked on evening primrose
Gregor Mendel, who worked on Pisum sativum
Hardy Weinberg, who worked on allele frequencies in a population
Hardy Weinberg, who worked on allele frequencies in a population
What is it that forms the basis of DNA fingerprinting?
The relative proportions of purines and pyrimidines in DNA
The relative difference in the DNA occurrence in blood, skin and saliva
The relative amount of DNA in the ridges and grooves of the fingerprints
The relative amount of DNA in the ridges and grooves of the fingerprints