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
A. Crossing over
B. Polyploidy
C. Segregation
D. Gene mutation
A. Linkage and crossing over
B. Presence of multiple alleles
C. Presence of lethal genes
D. Sex-linkage
A. Autodiploid
B. Hexaploid
C. Autopolyploid
D. Amphidiploid
A. Bagging
B. Inter over crossing
C. Intraspecific crossing
D. Inosculation
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
A. Diploid number of chromosomes
B. Tetraploid number of chromosomes
C. Haploid number of chromosomes
D. None of the above
A. Albinism is dominant over green characters
B. Green plastids of male parent become nitrated
C. Plastids are inherited through maternal parents
D. Crossing over results in structural changes in green plastids
A. Lysendo
B. Vavilow
C. Weismann
D. H be vnes
A. Mendel
B. Darwin
C. Huge and Vnes
D. Lamak
A. Conversion pf organism to change of environment
B. Fossils
C. Adaptations through genervation
D. Struggle for existence