Following are the steps involved in action of toxin in Bt. Cotton
A. The inactive toxin converted into active form due to alkaline pH of gut of insect.
B. Bacillus thuringiensis produce crystals with toxic insecticidal proteins.
C. The alkaline pH solubilises the crystals.
D. The activated toxin binds to the surface of midgut cells, creates pores and causes death of the insect.
E. The toxin proteins exist as inactive protoxins in bacteria.
Choose the correct sequence of steps from the options given below:
Match List-I with List-II :
List - I | List - II | ||
---|---|---|---|
(A) | Gene pool | (I) | Stable within a generation |
(B) | Genetic drift | (II) | Change in gene frequency by chance |
(C) | Gene flow | (III) | Transfer of genes into or out of population |
(D) | Gene frequency | (IV) | Total number of genes and their alleles |
Choose the correct answer from the options given below :
Which evolutionary phenomenon is depicted by the sketch given in figure?
A person with blood group ARh– can receive the blood transfusion from which of the following types?
A. BRh$$^–$$
B. ABRh$$^–$$
C. ORh$$^–$$
D. ARh$$^–$$
E. ARh$$^+$$
Choose the correct answer from the options given below :