Biology Questions

Which variable increases the likelihood of allopatric speciation taking place more quickly?

Which condition is the basis for a species to be reproductively isolated from other members?

Fly migration has occurred from Australia and across the Hawaiian islands. Though genetically similar, there are distinct allelic variations among all groups of these flies. What does this demonstrate?

Which of the following statements best describes theories? A) They are nearly the same things as hypotheses. B) They are supported by, and make sense of, many observations. C) They cannot be tested because the described events occurred only once. D) They are predictions of future events.

Two bird populations were once regarded as different species, but are now consider the same species. Which of the following pieces of evidence would cause for this reclassification?

Cichlid fish from Lake Apoyeque, Nicaragua, have begun to develop distinct morphologies that allow them to eat different foods within the same lake. If these fish never fully speciate but continue to produce fit hybrids over a long period of time, what will be the result?

The largest unit within which gene flow can readily occur is a

Natural selection explains the origin of life

DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that

With what other idea of his time was Cuvier's theory of catastrophism most in conflict? A) gradualism B) the fixity of species C) island biogeography D) uniformitarianism E) the scala naturae

Males of fruit flies have different elaborate courtship rituals. These include fighting males and stylized movement that attract females. What type of reproductive isolation does this represent?

During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result." Which statement is most likely to be helpful in correcting this student's misconception?

What was the prevailing belief prior to the time of Lyell and Darwin? A) Earth is a few thousand years old, and populations are unchanging. B) Earth is a few thousand years old, and populations gradually change. C) Earth is millions of years old, and populations rapidly change. D) Earth is millions of years old, and populations are unchanging. E) Earth is millions of years old, and populations gradually change.

Which of the following is not an observation or inference on which natural selection is based?

Which species concept states that individuals are of the same species if they are locally interbreeding populations that produce viable, fertile offspring?

If one compares the forearm of a human, dog, bird, and whale and finds that they indicate common ancestry, what would we call these structures?

Which of the following is the most accurate summary of Cuvier's consideration of fossils found in the vicinity of Paris? A) extinction of species yes; evolution of new species yes B) extinction of species no; evolution of new species yes C) extinction of species yes; evolution of new species no D) extinction of species no; evolution of new species yes

Catastrophism, meaning the regular occurrence of geological or meteorological disturbances (catastrophes), was Cuvier's attempt to explain the existence of A) evolution. B) the fossil record. C) uniformitarianism. D) the origin of new species. E) natural selection.

Cichlid fish in the same lake form different feeding habits and isolate from each other. This is an example of

Sie können für einen Gegenstand argumentieren, ob es sich um ein Lebewesen handelt oder nicht und falls ja, ob es lebt oder nicht-mehr lebt.