Which is a hominin?
a. chimpanzees only
b. australopiths only
c. baboons only
d. humans and australopiths
e. chimpanzee, australopiths, and baboons
d
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How did Bateson and Punnett's work with comb morphology in chickens differ from the dihybrid work of Mendel?
A. They were working with sex-limited traits. B. Their F2 offspring displayed 4 unique phenotypes, not the four combinations of two phenotypes expected in a Mendelian cross. C. ½ of their combinations were lethal. D. The expression of their trait varied by the environment in which the chickens were raised.
A nerve cell returns to the resting potential as ______ ions leave the cell
a. sodium b. potassium c. calcium d. chloride e. ammonium
The point at which the rate that a deleterious allele is being eliminated from a population by natural selection is in equilibrium with the rate at which the deleterious allele is being replaced by a new mutation is termed ________
A) mutation-dependent selection B) frequency-dependent selection C) mutation-dependent equilibrium D) mutation-selection balance
A symbiotic relationship where both of the co-existing species benefit from the interaction is called ________.
a) commensalism b) parasitism c) mutualism d) communism