NEET BIOLOGY

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GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When looking at two birds of the same species, you notice that one has darker feathers than the other one. You also notice that one has a beak that is just a little longer. These slight differences within members of the same species are called ____
A
Fossils
B
Extinction
C
Meiosis
D
Variations
Explanation: 

Detailed explanation-1: -According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring.

Detailed explanation-2: -On the Galapagos Islands, Darwin also saw several different types of finch, a different species on each island. He noticed that each finch species had a different type of beak, depending on the food available on its island. The finches that ate large nuts had strong beaks for breaking the nuts open.

Detailed explanation-3: -What most likely caused the finches on the Galapagos Islands to have beaks that were differnt from the finches living on the South American mainland? They were different types of food available on the island.

Detailed explanation-4: -The birds on different islands had many similarities, but their beaks differed in size and shape. Four of Darwin’s finch species from the Galápagos Islands. The birds came from the same finch ancestor. They evolved as they adapted to different food resources on different islands.

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