Do you agree with the following statement referring to the species groups in the phylogeny below: "Cases in which Epicephala and Glochidion moths diversified without cospeciating did not involve coevolution." Justi-fy your answer in one sentence
What will be an ideal response?
ANS:
No, coevolution cannot be excluded and it is in fact more likely than not that the moths coevolved with the new Glochidion species to which they switched.
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The term "potable water" refers to water that is
A. safe to swim in but not drink. B. safe to drink. C. only good for irrigation. D. contaminated with chemicals.
Among which of the following will sexual dimorphism lead to females being larger than
males?
a. among species where males physically fight for access to females b. among species where a male must guard a female to prevent other males from mating with her c. among species where males have to walk long distances to find females but fighting is rare d. Females being larger than males is always beneficial because it leads to higher fecundity.
Even though the caudal fin of sharks tends to direct the fish downward when swimming (due to slight downward force generated by the heterocercal tail) the shark still manages to swim at a fairly consistent depth. Explain how can this be so
What will be an ideal response?
All EXCEPT which of the following
statements about Neanderthals is true? a. Neanderthals diverged from modern humans around 500,000 years ago. b. They lived in Europe and the Near East. c. Neanderthals are direct ancestors of Homo sapiens. d. Neanderthals brains were larger than those of modern humans. e. They have no modern descendents.