Which statement best explains why it is so hard to control mosquitoes, fire ants, and other unwanted insects? The characteristics of insects have remained unchanged for many years.

Scientific evidence says that these pests must be completely eliminated.

Some of these organisms are invaders from other environments.

They quickly become resistant to pesticides in certain environments.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d