1.
geographic isolation is considered the last stage in speciation.
true
false
2.
the male crane performs an elaborate dance in an attempt to court and mate with a female. if this courtship dance changed and became perceived as a territorial dance, it could lead to what type of barrier?
behavioral isolation
geographic isolation
mating isolation
temporal isolation

What is used to keep track of the gamates and possible offsprings combination

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

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis