Inheritance 3 Questions

Question 1

One farmer stated that the increase of Bt crop plants had caused mutation in one of the insect species and that the mutation had spread to another species of insect . Was he correct ?

Answer 1

-No
-mutations happen randomly- not the increase of bt
-different species dont interbreed
-so mutation cant be passed from one specie to another

Question 2

There was a time lag between the introduction of Bt crops and the appearance of the first insect species that was resistant to bt toxin ,why?

Answer 2

-Initialy one insect that survived
-individual with advantageous allele produce offspring with same advantageous allele
-Takes many generations for favourable all to become most common allele

Question 3

how does Kdr create an inc of a graph

Answer 3

-mutation of KDR gene
-DDT provides a selection pressure
-they reproduce
-inc of allele

Question 4

How does KDR minus allele give rese=istance to DDT

Answer 4

-mutation of sodium ion Chanel of receptor
-DDT no longer complementary