Frog eggs most closely resemble
A. alligator eggs.
B. platypus eggs.
C. fish eggs.
D. chicken eggs.
Answer: C
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With sexual reproduction, two genes for the same
trait that are slightly different are called __________. Fill in the blank(s) with the appropriate word(s).
Birds and reptiles have a ________, which is a common receptacle for the digestive, urinary, and reproductive tracts that reabsorbs water back into the body
Fill in the blank(s) with correct word
Interferons and complement proteins are examples of:
A. mechanical barriers B. antibodies (immunoglobulins) C. phagocytes D. chemical barriers
Both walnut and Gingko trees lose their leaves in the fall when day length starts decreasing. Based on these observations, one may conclude that many tree species will lose their leaves in the fall in response to decreasing day length. This statement is an example of
A. a theory. B. an experiment. C. inductive reasoning. D. deductive reasoning.