A DNA double helix has two strands that are held to each other by ____
a. hydrogen bonds
b. ionic bonds
c. hydrophobic interactions
d. phosphodiester bonds
e. covalent bonds
A
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Which structure will house the DNA in a Eukaryotic cell?
a. Mitochondria b. Nucleus c. Nucleoid region d. Golgi body e. Chloroplast
Ocean currents flow in response to ____; their
direction is an outcome of the earth's rotation and ____, causing a ____ rotation in the Northern Hemisphere and a ____ rotation in the Southern Hemisphere. a. gravity; topography; counterclockwise; clockwise b. topography; gravity; clockwise; counterclockwise c. temperature; topography; clockwise; counterclockwise d. gravity; topography; clockwise; counterclockwise e. winds; gravity; clockwise; counterclockwise
You want to design a repressor protein mutant. Which protein domain is the best target for preventing binding of the corepressor?
A) DNA-binding domain B) allosteric domain C) promoter domain D) helix-turn-helix domain E) activator binding site
Which of the following statements about heritability is true?
A) Broad-sense heritability defines the complete genetic basis of a trait. B) Heritability is fixed for a given trait. C) Traits shared by members of the same family do not necessarily have high heritability. D) Heritability is the measure of the proportion of an individual's phenotype that is due to genetics. E) If a population displays little variation in a given trait, then that trait has low heritability