Which of the following statements apply to the variation in human skin color? select all that apply. select all that apply. human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of africa. variability in human skin color can be explained by the activity of a single gene. the color of human skin and the skin of our closest primate relative exhibits a similar range in variability. human skin color variation is primarily determined by the type and amount of melanin pigment in the skin. human skin color variation likely evolved in response to differences in the intensity of sunlight around the world.

The correct answers are:

Human skin color variation evolved recently in hominid evolution, once some populations of our human ancestors migrated out of Africa.

Human skin color variation is primarily determined by the type and amount of melanin pigment in the skin

Human skin color variation likely evolved in response to differences in the intensity of sunlight around the world.

A skin pigmentation of an individual is under the influence of both:

•Genetics-individual's parents' genetic makeup,  

•Environment-exposure to sun.

Human skin color evolved by a process of natural selection in order to regulate the amount of ultraviolet radiation that penetrates the skin.

Pigment responsible for skin color is melanin, produced by skin cell-melanocytes through the process of melanogenesis. Melanogenesis is initiated by exposure to UV radiation, which causes the skin to become darker.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.