What is a family tree that is used to follow human matings that have already occurred?
A) test cross
B) karyotype
C) sex-linked record
D) pedigree
D
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An egg rolling out of its nest is a(n) _______ to a nesting goose.
A. conditioned response B. reproductive habituation C. sign stimulus D. gene expression E. operant conditioning
An organism whose temperature is similar to its surroundings is called a(n)
a. endotherm. b. poikiotherm. c. ectotherm. d. warm blooded organism. e. osmoregulator.
Jacques Monod and François Jacob deduced the mechanism responsible for the regulation of prokaryotic gene expression. They are, therefore, responsible for launching the era of
A) the scientific method. B) molecular genetics. C) biochemistry. D) light microscopy. E) radioisotopes.
In most protostomes, the blastopore develops into the:a
gut. b. anus. c. nostril. d. mouth. e. coelom.