The tightly condensed non-functional X
chromosome is called a(an)
a. Barr body.
b. Y chromosome.
c. autosome.
d. X linked chromosome.
e. Watson segment
A
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Norton Zinder and Joshua Lederberg discovered transduction in experiments with ____
a. Escherichia coli b. Neurospora c. Aspergillus d. Salmonella typhimurium e. Streptococcus pneumoniae
Fossils of plants found in deeper geologic layers do not show vascular tissues, while fossils in shallower geologic layers include some specimens with and some without vascular tissues. Thus, vascular tissue in plants is considered a ____ character.
a. ancestral b. homoplasious c. primitive d. derived e. physiologically essential
Based on the cladogram, birds are most closely related to
A. snakes.
B. dinosaurs.
C. crocodiles.
D. mammals.
E. amphibians.
People embracing the idea of the great Chain of
Being did NOT believe in which of the following? a. Spiritual beings were a part of the Chain. b. All life forms were created at one time. c. Organisms could appear, disappear, or move up and down the Chain. d. Each species was “fixed” at creation. e. Once every link was discovered, the meaning of life would be known.