Speed of evolution.?

Question

The tempo or speed with which evolution and subsequent speciation can occur varies greatly. Darwin assumed that evolution was a constant accumulation of new traits that leads to the formation of a new species. In more recent years, Stephen Jay Gould and Niles Eldrege proposed a second explanation. Which of the following observations best explains the punctuated equilibrium model?



A. Fossils that show many intermediate stages between a species of horse from 6 million years ago and the currently existing species.

B. Fossils with little or no changes exist in strata over several million years, but suddenly disappear and a similar but obviously new species appears in relatively brief geological period.

C. A mass extinction is followed by numerous new species appearing.

D. All of the above are examples of the punctuated equilibrium.

E. Choices 2 and 3 are both examples of the punctuated equilibrium mode

Answer 1

E

Answer 2

When Gould and Eldrege were looking at snail shells, an odd thing struck them - it looked like sometimes the snails would be around more or less unchanged for quite a while (in geologic terms) and then suddenly the fossil record would show new types that were obviously closely related to the older ones, but were different species. This bothered them, particularly as Gould was one of the foremost modern Darwinian thinkers, and it didn't seem to fit within the classical Darwinian theorizing. After much thinking, discussion and beer, they came up with the idea of punctuated equilibrium as a variety of evolutionary process.

Answer 3

Theoretically, you could plug any area into any animal. although, there is not any saying the neurons will settle for it, and the immune gadget would pretty much positively kill the transplanted tissue. additionally, considered one of those technique would not impact the gametes of this creature, so those new appendages would not be modern interior the youngsters. this manner of element would not have any consequence on evolution in any respect, different than your doing so would probable kill the animal, eliminating it rather is genes from the gene pool. additionally, any creature is merely the techniques itself. something is a existence help gadget in case you will. It would not be a monkey with a human techniques, yet somewhat an unlucky human with a monkey's physique. considered one of those technique would rather kill the animal. including vocal chords to an animal would not do something, as whether you detect a sentient creature, it rather is techniques would not be hardwired to regulate human vocal chords easily sufficient to create speech. additionally, they are no longer cognitive interior the experience that people are, so as that they'd not attempt to apply human speech for communique anyhow. it would merely be yelling for all time. although, gorillas have been taught sign language, which shows that they do have the cognitive ability for lingual communique in maximum cases. merely no longer vocal language.

Answer 4

sorry i cant help because i dont understand the question.lol. =)