Which phase comes in between the G1 and G2 phases of cell cycle?
M - phase
G0 - phase
S - phase
Interphase
Cell division cannot be stopped in which phase of the cell cycle?
G1- phase
G2- phase
S- phase
Prophase
The difference between systolic and diastolic pressure in human is
120 mm Hg
80 mm Hg
40 mm Hg
200 mm Hg
Which one of the following viruses contains is a DNA and RNA?
Cyanophage
Herpes virus
Leuko virus
Polio virus
How many variable segments are present in the basic structure of antibody molecule?
One
Two
Three
Four
Transposons are
house-keeping genes
jumping genes
transporting genes
stationary genes
B.
jumping genes
Transposons are sequences of DNA that can move around to different positions within the genome of a single cell, a process called transposition. They are also known as jumping genes and can cause mutations. They were discovered by Barbara McClintock, for which she was awarded a Nobel prize in 1983.
Housekeeping genes are constitutive genes that are required for maintenance of basic cellular function and are expressed in all cells of an organism under normal and patho- physiological conditions.