For the following lac operon partial diploid genotypes, indicate with a (+) or (- ) whether enzymatic activity would be detected for -Galactosidase and/or Permease when lactose is absent and when lactose is present. Solution is given below could you explain how to get them?

A.) I+ P+ Oc Z+ Y- / Is P+ O+ Z- Y+

B.) I- P+ O+ Z+ Y+ / I+ P+ O+ Z+ Y-

C.) I+ P- Oc Z+ Y- / I+ P+ O+ Z- Y+

D.) I- P+ Oc Z+ Y- / I+ P+ O+ Z- Y+

E.) Is P- Oc Z+ Y+ / I+ P+ O+ Z+ Y-

F.) I+ P- O+ Z+ Y- / I- P+ OC Z- Y+

Lactose Absent

Lactose Present

b-Gal

Permease

b-Gal

Permease

A

+

-

+

-

B

-

-

+

+

C

-

-

-

+

D

+

-

+

+

E

-

-

-

-

F

-

+

-

+

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

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.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?