Suppose that scientists also studied a second population of belding’s ground squirrels from a different habitat. life table data for the first three years of this hypothetical population are shown below. (note that the table is not completely filled in because you will be calculating some of these values.) age (years) number alive at start of year proportion alive at start of year death rate average number of female offspring 0-1 80 1.000 0.00 1-2 64 ? 1.20 2-3 40 2.40 which equation determines the proportion of ground squirrels alive at the start of year 1-2? (this value is marked with a "? " in the table.) 40/64 = 0.625 (80-64)/80 = 0.200 64/80 = 0.800 (80-64)/64 = 0.250

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

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

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture