Barnacles live on the bodies of whales and other aquatic organisms. They do not hurt their host but gain the benefit of a habitat and food supply from the host. This relationship is called
a) commensalism
b) parasitism
c) mutualism
d) predation
Ans: a) commensalism
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The prevention of infection caused by microorganisms is called
A. antisepsis. B. sanitization. C. sterilization. D. disinfection.
What phase of meiosis is seen in the figure above?
A) metaphase I B) metaphase II C) anaphase I D) anaphase II
A recent study compared the Homo sapiens genome with that of Neanderthals. The results of the study indicated that there was a mixing of the two genomes at some period in evolutionary history
Additional data consistent with this hypothesis could be the discovery of _____. A) some Neanderthal sequences not found in living humans B) a few modern H. sapiens with some Neanderthal sequences C) duplications of several Neanderthal genes on a Neanderthal chromosome D) some Neanderthal chromosomes that are shorter than their counterparts in living humans
Insecticide resistance is an example of artificial selection
Indicate whether the statement is true or false.