AP BIOLOGY

EVOLUTION

PATTERNS OF EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What happens in divergent evolution?
A
organisms become more similar
B
organisms become less similar
C
species become more related
D
adaptive radiation always occurs
Explanation: 

Detailed explanation-1: -Contrary to convergent evolution, divergent evolution is the process wherein the interbreeding species diverge into two or multiple evolutionary groups. In other words, these groups of species were related and similar, but with time, they grew to become dissimilar.

Detailed explanation-2: -Divergent evolution represents the evolutionary pattern in which species sharing a common ancestry become more distinct due to differential selection pressure which gradually leads to speciation over an evolutionary time period.

Detailed explanation-3: -In models lacking competition between resources, divergence does in fact decrease competition as measured by method (2) (e.g., Lawlor and Maynard Smith 1976; Abrams 1986). The effect of evolutionary divergence when there is significant resource competition is more complicated.

Detailed explanation-4: -In divergent evolution, the two new species that diversified share a common ancestor. An important aspect of divergent evolution is that it may decrease competition between the two groups as they become more and more dissimilar through the evolution of traits.

Detailed explanation-5: -Convergent vs Divergent Evolution Convergent evolution is when two species with different ancestral origins develop similar characteristics, while divergent evolution refers to when two species diverge from a common ancestor and develop different characteristics.

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