Who are Darwin and lamark?

Answer 1

Charles Darwin was a naturalist and the author of On the Origin of Species. Darwin believed that species evolved though random mutation, with mutations that caused a beneficial change being more successful than those that caused maladaptive or no change. He called this process "natural selection."

Jean-Baptiste Lamarck was a naturalist who believed that creatures could change during their own lifetime, acquiring characteristics in response to changes in the environment, which they could then pass on to their offspring.

For example, we know that giraffes have long necks. Lamarck would say that giraffes with shorter necks would stretch high to reach leaves in the tops of trees. This would stretch their necks. Their offspring would then be born with longer necks. Darwin said that short-necked giraffes would have competition with other grazing animals, so giraffes with even a slightly longer neck would be able to eat leaves that antelope and other grazers couldn't reach. These giraffes would be more likely to be well fed and reproduce, and pass their longer necks along to their offspring.

We now know that, with some limitations, Darwins theory is corect.