Bacterial cells typically have ____ while eukaryotic cells have ____
a. a single circular chromosome; many linear chromosomes.
b. several circular chromosomes; many linear chromosomes.
c. one linear chromosome; many circular chromosomes.
d. two circular chromosomes; numerous circular chromosomes depending on the species.
e. numerous circular chromosomes depending on the species; many linear chromosomes.
A
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Meselson and Stahl's experiment followed
A) the distribution of different-weighted DNA over multiple generations of bacteria. B) the ability of a protease or nuclease to stop the transmission of DNA over generations. C) viruses injecting their DNA into bacteria. D) DNA sequences in people who are politically liberal compared to those who are sometimes politically conservative.
Most short-period comets do not have randomly oriented orbits because
a. they are affected by the Sun's gravity. b. they are affected by the solar wind. c. they formed in the Kuiper Belt, a belt-shaped region in the plane of the solar system. d. their orbits are altered by the drag of their tails in the solar wind. e. they all were originally objects ejected from the asteroid belt.
Select the best choice for statements 131–134 in reference to the
five classes listed below. a. Chondrichthyes b. Osteichthyes c. Amphibians d. Reptilians E 131. Members of this class are fully terrestrial except for reproduction. M 132. Members of this class have cartilaginous skeletons but also possess jaws. M 133. Some species of this class live in water but are not dependent upon an aquatic environment. D 134. Members of one unusual group may have been ancestors of amphibians.
With multiple alleles, there can be more than two genetic alternatives for a given locus
Indicate whether the statement is true or false