Agalloping pony speeds past you at 5 m/s. the frequency of the sound produced by the hooves on the dirt is 221 hz. assume the speed of sound to be 342 m/s. what is the observed frequency of the hooves after the pony has passed your position? 218 hz 226 hz 216 hz 224 hz

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

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna