Keratins are structural proteins in skin, hair, and fingernails. one gene, called krt10, is located on the 17th chromosome in humans. it produces a keratin molecule that strengthens skin cells. researchers have identified several mutations that can lead to rough, damaged, blistering skin because the keratins are not as strong as normal. each of the identified mutations changes a specific amino acid at a particular location in the protein, and so is an example of a(n) mutation.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

An example of a trait that would be considered acquired and inherited is a. a cleft chin b. muscle tone c. scar tissue d. freckled skin

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?