Humans and chimps look and behave differently due to differences in ________ rather than in genome sequence.
A) gene expression
B) genetic mutation
C) phenotypes
D) mtDNA
A) gene expression
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What enzymes are used to cut DNA molecules? How do they work?
What will be an ideal response?
Melanin protects the skin from
a. desiccation. b. abrasion. c. ultraviolet radiation. d. infrared damage. e. invasion by bacteria.
Reiji Okazaki discovered that "Okazaki fragments" are produced during DNA replication. What are Okazaki fragments?
a. short lengths of new DNA on the leading strand b. RNA primers on both the lagging and leading strand c. RNA primers on the lagging strand d. short lengths of new DNA on the lagging strand
Which microscope is most useful for visualizing a biofilm?
A) compound light microscope B) phase-contrast microscope C) fluorescence microscope D) scanning acoustic microscope E) transmission electron microscope