Semiconservative replication of DNA was first demonstrated in
Drosophila melanogaster
Escherichia Coli
Streptococcus pneumoniae
Streptococcus pneumoniae
B.
Escherichia Coli
Semiconservative replication of DNA was first demonstrated in E.coil. According to the semiconservative mode proposed by Waston and Crick, each strand of the two double helices formed would have one old and one new strand. The semiconservative nature of DNA of replication was proved by the experiment of Meselson and Stahl (1958).
Which one of the following statements is correct?
Patients, who had undergone surgery are given cannabinoids to relieve pain
Benign tumours show the property of metastasis
Heroin accelerates body functions
Heroin accelerates body functions
Global agreement on specific control strategies to reduce the release of ozone depleting substance was adopted by
Rio de Janerio Conference
The Montreal protocol
The koyoto protocol
The koyoto protocol
A young infant may be feeding entirely on mother's milk, which is white in colour but the stools, which the infant passes out is quite yellowish. What is the yellow colour due to?
Intestinal Juice
Bile pigements passed through bile juice
Undigested milk protein casein
Undigested milk protein casein
Biochemical Oxygen Demand (BOD) in a river water
remains unchanged when algal bloom occurs
has no relationship with the concentration of oxygen in the water
gives a measure of Salmonella in the water
gives a measure of Salmonella in the water
What is not true for genetic code?
A condon in mRNA is read in a non-contiguous fashion
It is nearly universal
It is degenerate
It is degenerate
Transgenic plants are
produced by a somatic embryo in an artificial medium
generated by introducing foreign DNA into a cell and regenerating a plant from that cell
Produced by protoplast fusion in the artificial medium
Produced by protoplast fusion in the artificial medium
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Ovulation - LH and FSH attain peak level and sharp fall in the secretion of progesterone
Proliferative - Rapid regeneration of myometrium and maturation of Graafian follicle
Development of corpus - luteum - Secretory phase and increased secretion of progesterone
Development of corpus - luteum - Secretory phase and increased secretion of progesterone
