AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the definition of convergent evolution?
A
Different species tend to show the same characteristic and they create a new one because they can breed between themselves.
B
Two species appear from speciation from a previous existing one.
C
A cataclism destroys all the members of a species and new ones occupy their places
D
Negative mutations create new species.
Explanation: 

Detailed explanation-1: -It is the independent evolution of features that are similar in species spanning over different eras. This evolution produces analogous structures having similar functions or forms. However, they are not seen in the last common ancestor of those units.

Detailed explanation-2: -In evolutionary biology, convergent evolution is defined as the process whereby distantly related organisms independently evolve similar traits to adapt to similar necessities. VLRs and TCRs/BCRs both serve as antigen receptors, but are evolutionarily unrelated.

Detailed explanation-3: -Functionally similar features that have arisen through convergent evolution are analogous, whereas homologous structures or traits have a common origin but can have dissimilar functions.

Detailed explanation-4: -Convergent evolution describes the independent evolution of similar features in species of different lineages. The two species came to the same function, flying, but did so separately from each other. They have “converged” on this useful trait.

Detailed explanation-5: -Convergent evolution is when different organisms independently evolve similar traits. For example, sharks and dolphins look relatively similar despite being entirely unrelated.

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