HeLa’s cells were critical in
a. the development of polio vaccines.
b. developing a cure for malaria.
c. understanding fertilization.
d. the development of a cervical vaccine.
e. more than one of these
A
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Kin selection is a form of natural selection in which ____
a. dominant individuals share resources disproportionately with their close relatives b. individuals help relatives only if they are likely to return the favor in the future c. group members sacrifice their own reproductive success to help individuals who are not their direct descendants d. shared alleles for altruism are perpetuated if the assisted animals produce more offspring than the helper could have produced if he had not helped e. shared alleles for altruism are perpetuated if the helper produces more offspring than the relatives that he aids
After a large meal is digested, how does the liver reduce blood glucose levels?
A) by converting glucose to glycogen B) by breaking down glucose into waste products C) by stimulating the pancreas to store excess glucose D) by releasing hormones that inhibit the pancreas
What is the estimated frequency of allele A in the gene pool?
A) 0.25 B) 0.50 C) 0.75 D) 0.125
What is the most common reason why DNA analyses overturn incorrect criminal convictions?
a) Science has not traditionally been used in the courtroom to convict a suspect. b) The legal system traditionally has convicted anybody who refused to have their DNA sampled. c) DNA evidence is much more reliable an identifier of an individual than eyewitness accounts. d) We've only known for the last five years that DNA is fairly unique to an individual. e) Scientists can study a person's DNA and determine whether or not that person is a criminal.