Sympatric speciation specifically EXCLUDES ________
A) behavioral isolation
B) postzygotic barriers
C) geographic isolation
D) temporal isolation
C
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The observation that island D. yakuba are more closely related to mainland D. yakuba than island D. yakuba are to D. santomea is best explained by proposing that D. santomea _____
A) descended from a now-extinct, non-African fruit fly B) arrived on the island before D. yakuba C) descended from a single colony of D. yakuba, which had been introduced from elsewhere, with no subsequent colonization events D) descended from an original colony of D. yakuba, of which there are no surviving members. The current island D. yakuba represent a second colonization event from elsewhere.
What is the order of action of these classes of genes during Drosophila development?
A) maternal effect, gap, pair rule, segment polarity B) maternal effect, gap, segment polarity, pair rule C) maternal effect, pair rule, segment polarity, gap D) maternal effect, segment polarity, gap, pair rule
What description applies to a disease-causing organism that can spread from one organism to another?
A) contagious B) infectious C) parasitic D) microscopic
What is phagocytosis
What will be an ideal response?