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.

Rotenone is an insecticide that is toxic

The specific heat of ice is 0.5 calories/gram°c. 20 grams of ice will require ll calories to raise the temperature 1°c. 05

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening