AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of evolution do analogous structures show?
A
convergent
B
divergent
C
artificial selection
D
disruptive selection
Explanation: 

Detailed explanation-1: -Convergent evolution occurs when species occupy similar ecological niches and adapt in similar ways in response to similar selective pressures. Traits that arise through convergent evolution are referred to as ‘analogous structures’.

Detailed explanation-2: -Convergent evolution is a kind of evolution wherein organisms evolve structures that have similar (analogous) structures or functions in spite of their evolutionary ancestors being very dissimilar or unrelated.

Detailed explanation-3: -Convergent evolution refers to the evolution in different lineages of structures that are similar or ‘analogous’, but that cannot be attributed to the existence of a common ancestor; in other words, the fact that the structures are analogous does not reflect homology.

Detailed explanation-4: -Analogous structures are examples of convergent evolution, where two organisms separately have to solve the same evolutionary problem – such as staying hidden, flying, swimming, or conserving water – in similar ways. The result is similar body structures that developed independently.

Detailed explanation-5: -Analogous structures are the kind of structures that are produced by convergent evolution. Convergent evolution is when similar traits arise independently in unrelated groups. Analogous structures are exemplified by the wings of bats and insects.

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