How does the early development of the mouse differ from that of Caenorhabditis?
a. Embryonic mouse cells commit to their ultimate fate earlier than do the cells of
Caenorhabditis.
b. Early development of a mouse is regulative, while early development of Caenorhabditis is
not.
c. Mouse cells require higher concentrations of nutrients than do the cells of Caenorhabditis.
d. Embryonic mouse cells differentiate much later than the cells of Caenorhabditis.
e. Embryonic development in the mouse is controlled by transcription factors, while
Caenorhabditis is not.
B
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The Gulf Stream takes relatively cold water toward northwestern Europe
Indicate whether the statement is true or false.
Kelps are a form of what group of protists?
a. brown algae b. slime molds c. water molds d. ciliates e. dinoflagellates
The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger length. Assume that a female with brachydactyly in the heterozygous condition is married to a man with normal fingers
What is the probability that (a) their first child will have brachydactyly? (b) their first two children will have brachydactyly? (c) their first child will be a brachydactylous girl?
In hybrid zones where reinforcement is occurring, we should see a decline in _____
A) gene flow between distinct gene pools B) speciation C) the genetic distinctness of two gene pools D) mutation rates