After carefully watching the video, choose THE BEST Claim in regards to why human skin color varies throughout the world. A. Primates have light skin color under their dark hair so when humans began to evolve and lose body hair, that pigment needed to go into their skin so they could still blend in with their surroundings.
B. Darker melanin is beneficial for reproduction in areas where ultraviolet (UV) light is high, and can negatively affect reproduction in areas of low UV light.
C. Darker melanin is beneficial under intense UV light because it protects from skin cancer, absorbing the UV light. Under low UV light, producing excess melanin uses too much energy, therefore it is more beneficial (energy saving) to produce less melanin in low UV light areas.
D. Humans evolved as separate populations, around the equator and towards the poles, so skin pigment color (melanin) was naturally different in those areas.

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 represents a negative impact of technology

Why is it to call the calvin cycle the light independent reactions vs the dark reactions