A. Canada
B. Iran
C. Mexico
D. India
Plant Breeding and Genetics
Nobel prize for the discovery of operon model was awarded to………………?
A. Jacob and monod (1965)
B. Crick (1966)
C. Watson and Crick (1953)
D. Briuen and Davidson (1959)
A child is born with an extra chromosome in each of it cells, the reason is……………….?
A. Non-disjunction
B. Segregation
C. Hybridization
D. Crossing over
In random mating population gene frequencies remain constant generation after generation in the absence of………………?
A. Mutation
B. Selection
C. Migration
D. Random drift
Polytene chromosomes were first observed by……………….?
A. Mendel (1810)
B. Balbiani (1881)
C. Allard (1910)
D. Baranetzky (1910)
Sugar present in DNA is……………?
A. Pentose
B. Hexose
C. Heptose
D. Triose
How many type of DNA are……………..?
A. 2
B. 3
C. 4
D. 6
The protoplasm is…………….?
A. Solution
B. Semi-solid
C. Crysto colloidal solution
D. Colloidal solution
The chief function of the centro mere concerns……………….?
A. Spindle formation
B. Nucleolus formation
C. Chromosome replication
D. Chromosome movement
In meiosis homologous chromosomes separate from each other in ………………….?
A. metaphase I
B. Auaphase I
C. Metaphase II
D. Anaphase II