Question

Need all to be answered

26.Melanin:

A)occurs in individuals with light skin tone.

B)is advantageous because it provides protection from solar radiation.

C)is a chemical that decreases the possibility of a tan.

D)develops more with age.

27.The logic of evolutionary psychology begins with the precept that

A)humans evolved only in stratified societies and high population density.

B)natural selection creates psychologies in humans in such a way as to solve specific adaptive problems.

C)people are only adapted to modern ways of life.

D)complex adaptations evolve quickly.

28.Natural selection should favor behaviors that

A)decrease the chances of outbred matings.

B)increase mating with siblings but not parents.

C)increase mating with relatives.

D)reduce mating with relatives.

29.In lab, you find a skull whose foramen magnum is located under the skull. What can you conclude from this detail?

A)A large brain caused the foramen magnum to shift to the base of the skull.

B)The individual was likely bipedal.

C)The specimen’s teeth were no longer necessary as weapons.

D)The skull came from an australopithecine.

Answer 1

26, Melanin is advantageous because it provides protection from solar radiation. Melanin which is produced by melanocytes detects the Uv radiation from sun and protect the skin from sun burn or cancers. People with increased melanin are less prone to skin cancers.

Other options are incorrect because

melanin is present in all persons but it is more in people with dark skin tone

melanin decreases with age

tanning can increase melanin secretion

27, natural selection creates psychologies in humans in such a way as to solve specific adaptive problems.

The logic of evolutionary psychology is that evolution and  natural selection has shaped the psychological adaptation in humans.

Other options are not based on evolutionary psychology

28, reduce mating with relatives.

natural selection should reduce mating with relatives. Inbreeding avoidance is important because inbreeding can cause a reduce in the fitness of the offsprings in the population. It results in inbreeding depression ,decreased genetic pool- decreases genetic diversity and variation.

29,The individual was likely bipedal.

The position of foramen magnum is important in bipedals like humans and many other animals. It is a circular or a oval hole through which the spinal cord exits from the cranial part of the head.

the other options are incorrect.