Pesticide resistance is increasing. Farmers in the US lost 7% of their crops to pests in the 1940s; over the 1980s and 1990s, the loss was 13%, despite more pesticides being used. It is estimated that 500-1000 pests have developed a resistance to pesticides. Consider
the diagram showing the evolution of pesticide resistance Select ALL of the statements that do NOT accurately describe the
mechanisms of pesticide resistance shown in the graphic
田 )
A)
Insects that are sensitive to the pesticide all die out after the first
application, leaving only the resistant insects in the population
B)
C)
When insects are exposed to the pesticide, some will develop a mutation
making it resistant. Only these insects survive in the next generation
The first generation has an insect with a gene responsible for resistance to
a pesticide. This allows it to survive the pesticide application and
reproduce
The insect with the pesticide resistance gene reproduces. Because these
insects are more likely to survive pesticide application, insects with this
trait become more prominent in the population
As a population of insects is exposed to a pesticide, those susceptible to
the pesticide will die out of the population, leaving those with a resistance
to survive and reproduce, becoming more common in the population
D)
E)
M
פ ס )

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.

Disaccharides include what sugar molecules. true or false?

Which of the following is not true of the formation of a bacterial translation initiation complex? a. if-3 binding to gtp is required for the charged trna to associate with the first mrna codon. b. n-formylmethionyl-trnafmet binds in the p site. c. if-1, if-2, and if-3 dissociate upon the 50s subunit binding. d. the 30s ribosome associates with the mrna before the 50s ribosome.