The reference or primary line of longitude is:
a. the Tropic of Cancer.
b. the Tropic of Capricorn.
c. the Greenwich meridian.
d. the equator.
e. the International Date Line.
C
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What are the two distinct body plans found in phylum Cnidaria?
a. radial and bilateral b. cephalized and caudalized c. polyp and medusa d. acoelomate and coelomate
Since mice embryos with loss-of-function Hox mutations result in homeotic alterations, then introduction of such a mutation might cause __________
A) ribs on normally rib-less vertebrae B) pointed rather than rounded ears C) a change in fur coloration along the dorsal midline D) behavioral alterations causing limb shaking E) paralysis of hindlimbs but not forelimbs
Which is NOT true about the chromosomes of a multicellular organism?
a. they are made up of DNA and protein b. each chromosome is replicated into two chromatids during the S stage of interphase c. Each chromosome separates into two daughter chromosomes by binary fusion d. all cells contain chromosomes that carry the same genetic information
Which of the following diseases is NOT associated with bacteria that form endospores?
A) tetanus B) anthrax C) gangrene D) botulism E) toxic shock syndrome