NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two different birds have two different mating calls. They won’t reproduce because of this. This is called ____ isolation.
A
geographic
B
temporal
C
behavioral
D
None of the above
Explanation: 

Detailed explanation-1: -Two species might produce egg and sperm cells that can’t combine in fertilization, even if they meet up through mating. This is known as gametic isolation.

Detailed explanation-2: -Different mating rituals can lead to isolation. One example is birds singing different songs to attract mates. Other examples include different preferences in breeding calls, mating dances, and pheromones.

Detailed explanation-3: -Behavioral isolation occurs when the presence or absence of a specific behavior prevents reproduction from taking place. For example, male fireflies use specific light patterns to attract females.

Detailed explanation-4: -Examples of temporal isolation include differences in mating behaviors or fertility due to the time of day, time of year, or varied mating cycles. Two species which are temporally isolated long enough may eventually accrue enough genetic differences that they will no longer be able to interbreed.

Detailed explanation-5: -Behavioral isolation occurs when mismatches in mating traits (signals and/or preferences) prevent mating between two species/populations.

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