The most common type of polyploidy in humans is ____
a. trisomy
b. monosomy
c. triploidy
d. tetraploidy
e. haploidy
c
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Which of the following statements is TRUE?
A) Lambda is a temperate phage that infects Escherichia coli. B) Lambda is a linear double-stranded DNA phage. C) Lambda is replicated by the rolling circle mechanism. D) Lambda is a temperate phage that replicates its double-stranded DNA genome with a rolling circle mechanism.
Which structure helps prokaryotic cells attach to substrates and aid in the exchange of genetic information between cells?
A. flagella B. nucleoid C. pili D. ribosome E. capsule
When a New England farm is abandoned, its formerly plowed fields first become weedy meadows, then shrubby areas, and finally forest. This sequence of plant communities is an example of
A) evolution. B) a food chain. C) secondary succession. D) primary succession.
The Dopamine Hypothesis is the theory that (A)______ of (B)_______ lead to schizophrenia.
a. (A) low levels (B) catecholamine b. (A) low levels (B) serotonin c. (A) high levels (B) catecholamine d. (A) high levels (B) serotonin