The structure polychaetes use to monitor water currents for prey is a:
a. chromatophore
b. proboscis.
c. pharynx.
d. chemoreceptor.
d
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Darwin's voyage took place between ____
a. 1730 and 1735 b. 1830 and 1835 c. 1853 and 1858 d. 1930 and 1938 e. none of the choices
What term describes a group of animals that is self-organized by rank?
a. selfish herd b. dominance hierarchy c. pack d. social group e. culture
Lysogeny can result in all of the following EXCEPT
A) immunity to reinfection by the same phage. B) acquisition of new characteristics by the host cell. C) immunity to reinfection by any phage. D) specialized transduction. E) phage conversion.
Assume that there are 12 map units between two loci in the mouse and that you are able to microscopically observe meiotic chromosomes in this organism. If you examined 200 primary oocytes, in how many would you expect to see a chiasma between the two
loci mentioned above? A) 12 B) 6 C) 48 D) 96 E) 24