LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is true about organisms that share a common ancestor?
A
They have homologous structures due to divergent evolution
B
They have analogous structures due to divergent evolution
C
They have homologous structures due to convergent evolution
D
They have analogous structures due to convergent evolution
Explanation: 

Detailed explanation-1: -Homologous features If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.

Detailed explanation-2: -Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.

Detailed explanation-3: -In divergent evolution, homologous structures are structures indicating a species is diverging from its ancestor. These structures need not have the same function as those of the species’ ancestors. For example, the forelimbs of humans and bats are homologous structures.

Detailed explanation-4: -Answer and Explanation: Homologous structures are evidence for divergent evolution because, although the structures are very similar, they can function very differently in each species.

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