mitosis is the normal process in a living cell but sudden and abnormal mitosis in an organ will some time result in__________________?
A. Cancer
B. Zygote
C. Gastrula
D. New organ
The mechanism ensuring genetic continuity in mitosis is____________________?
The mechanism ensuring genetic continuity in mitosis is____________________?
A. Formation of two daughter cells with identical DNA
B. Crossing over of the genes
C. Halving of chromosome nuriber between two daughter cells
D. Segregation of maternal and paternal characters
The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?
The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?
A. Polyploidy
B. Mutant
C. Variant
D. Hybrid
Linked gene may be separated by the process of_________________?
Linked gene may be separated by the process of_________________?
A. Evolution may be described as
B. History of development of larger biological units
C. Inheritance of acquired characters
D. Discontinuous genetic variation
Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?
Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?
A. Crossing over
B. Polyploidy
C. Segregation
D. Gene mutation
Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?
Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?
A. Linkage and crossing over
B. Presence of multiple alleles
C. Presence of lethal genes
D. Sex-linkage
A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?
A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?
A. Autodiploid
B. Hexaploid
C. Autopolyploid
D. Amphidiploid
One of the following is not a technique in hybridization_________________?
One of the following is not a technique in hybridization_________________?
A. Bagging
B. Inter over crossing
C. Intraspecific crossing
D. Inosculation
One of the following is not an advantage of genetic engineering___________________?
One of the following is not an advantage of genetic engineering___________________?
A. Microbes act as biological factories
B. Improvement of crop can take place
C. The gene pool is maintained
D. Genetic error can be rectified
Number of lindage groups of chromosomes____________________?
Number of lindage groups of chromosomes____________________?
A. Diploid number of chromosomes
B. Tetraploid number of chromosomes
C. Haploid number of chromosomes
D. None of the above