use and disuse
origin of species
origin of life
natural selection
Explanation
Video Explanation
No video available
Post your Contribution
Discussions (14)
The accepted theory on giraffe evolution is that the giraffes with the longest necks passed on their genes through natural selection, and that it took millions of years to get the animal we see now. The two forces that drove giraffes towards elongating their necks are simple. The need to eat and the need to breed.
Please take note the answer is Natural Selection (D)
Explanation: The giraffe's long neck is a perfect adaptation to the animal's natural habitat. Clearly the giraffe evolved this uncommon and helpful trait in order to reach those nourishing leaves. That's how natural selection works.i guess is natural selection (D)
My school its D
Charles Darwin held up giraffes as a prime
example of natural selection, his theory that's
often summarized as “survival of the fittest.”
Giraffes with comparably longer necks could reach
food high up in trees, which gave them an
advantage over other animals and members of
their own species with shorter necks.
Lamarck had proposed the theory of inheritance of the acquired characters. The theory explains that the organisms adapt to the changing environnment. The characters which are developed in the organism are also transferred to the next generation. This theory was explained with the help of classic example which involved the neck of giraffes. He observed that giraffe's neck became longer through the generation as the giraffe stretches its neck to reach the leaves on tall trees. It's offsprings would inherit the longer neck, and continued stretching would make it longer still over several generation. This theory is referred to as law of use and disuse.
The long neck in giraffe is not natural selection but illustrates the law of use and disuse by Jean Lamarck
long neck of giraffe were used in both Darwin and Lamarck's theory but the valid one is Darwin
Myschool the answer is A cos lamark used it to explain the theory of use and disuse
