NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best demonstrates analogous structures in animals?
A
cat fur and dog fur
B
whale fins and human arms
C
bird wings and insect wings
D
gills in fish and lungs in mammals
Explanation: 

Detailed explanation-1: -Convergent evolution is the process whereby organisms not closely related, independently evolve similar traits as a result of having to adapt to similar environments or ecological niches. The wings of a bird and the wings of an insect are analogous structures and represent convergent evolution.

Detailed explanation-2: -Analogies are similar characteristics shared by two different organisms because of convergent evolution. For example, the wing of a dove and the wing of a butterfly are analogous; the bird lineage and the insect lineage evolved wings independently of one another.

Detailed explanation-3: -Bird wings and insect wings are analogous structures.

Detailed explanation-4: -This idea is illustrated by the phylogeny below, which is based on a large number of other characters. Bird and bat wings are analogous-that is, they have separate evolutionary origins, but are superficially similar because they have both experienced natural selection that shaped them to play a key role in flight.

Detailed explanation-5: -The wings of birds, bats, and insects are analogous structures; they serve the same function of flight but their structure and origin are different from each other.

There is 1 question to complete.