Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Evolution
| Question | Answer |
|---|---|
| Some varieties of Neisseria gonorrhoeae are now resistant to penicillin. These varieties of bacteria most probably developed as a result of: | Natural selection |
| The difference in cricket calls among sympatric species of crickets are an example of: | behavioral isolation |
| Which of the following statements best describes the effect of genetic drift on the gene frequencies of a population? | Chance alone can cause significant changes in gene frequencies of small populations. |
| Although the seal and the penguin both have streamlined, fishlike bodies with a layer of insulating fat, they are not closely related. This similarity results from: | Convergent evolution |
| All of the following conditions would result in a change in the frequency of a specific allele in a population EXCEPT: | random mating in a large population |
| People with infections did not respond to treatment with any of the antibiotics and there was a large number of deaths. The best explanation for this situation is that: | Antibiotic-resistant bacteria survived and multiplied, and these were the forms causing the infections |
| A new species of organisms has evolved when: | A population can no longer interbreed under natural conditions with other closely related organisms. |
| The wing of a bat, the flipper of a whale, and the forelimb of a horse appear very different, yet detailed studies reveal the presence of the same basic bone pattern. These structures are examples of: | homologous structures |
| All of the "blue-skinned" residents can trace their ancestry to one couple, who were among the original settlers of this region. The unusually high frequency of "blue skin" in the area is an example of: | founder effect |
| The different species of finches on the Galapagos Islands are believed to have arisen as a result of the natural selection acting on populations of finches that had experienced: | geographic isolation |
| Which of the following is probably the best explanation for the fact that Antarctic penguins cannot fly, although there is evidence that millions of year ago their ancestors could do so? | Ancestral penguins without large wings were better able to swim and feed in the water; therefore they passed their genes for shorter wing structure on to their offspring. |
| If this individual is capable of reproducing to form a new population, scientists would consider this to be an example of: | sympatric speciation |
| The total aggregate of genes in a population at any one time is known as: | the gene pool |
| Toads in a particular population vary in size. A scientist observes that in this population, large males mate with females significantly more often than small males do. All the following are plausible hypotheses to explain this observation EXCEPT: | Small females are more likely to mate with small males and large females are more likely to mate with large males. |
| What is the frequency of the HYPP allele in this herd which is in Hardy Weinberg equilibrium? | .4 |
| Which of the following statements best expresses the concept of punctuated equilibrium? | Evolutionary changes consist of rapid bursts of speciation alternating with long periods in which species remain essentially unmodified. |
| Which of the following principles is NOT part of Darwin's original theory of evolution by natural selection? | Mutations are the ultimate source of genetic variation. |
| The average surface area of leaves has been deceasing in successive generations. This is an example of: | directional selection |
| Members of which of the following taxa are more closely related? | family |
| The evolution of several species from single species, each occupying a different niche in a new environment is: | adaptive radiation |
| If stabilizing selection now operates on this trait for some years, which one of the graphs below is most likely to depict the new range of expression of the trait? | Longest graph |
| Most new species probably have arisen by: | cladogenesis |
| The development of feathers in the ancestors of birds is an example of: | exaptation |
| Male lowland gorillas are generally much larger and also exhibit a silver hair coloration which is not seen in female lowland gorillas. This is an example of: | sexual dimorphism |
| Natural selection acts on ___, while only ___ evolve. | individuals, populations |
| The dew claw on a dog is an example of: | a vestigial organ |
| When we say that one organism has a greater fitness than another organism, we specifically mean that it: | leaves more viable offspring than others of its species. |
| The best evidence for a common origin of all life is: | molecular biology |
| Which of the following is least likely to leave a fossil? | a soft-bodied land organism such as a slug |
| Those individuals which look more like the normal variety of the viceroy butterfly have no protection. This is an example of: | diversifying selection |
| Wings on a fly and wings on a bat are an example of this type of structure which is a result of convergent evolution, not support for common ancestry. | analogous structure |
| This type of barrier prevents formation of new species as a result of hybrids failing to produce functional gametes: | post zygotic barrier |
| Lamarck's attempts to explain how characteristics evolve in organisms: | stated that acquired traits are passed from one generation to the next. |
| The two criteria used most often in taxonomic classifications are: | morphology and evolutionary history |
| What is the frequency of p in this population? | .62 |
| However, the North American flying squirrel is a placental mammal while the Australian sugar glider is a marsupial mammal. How is it possible that these organisms look identical? | This is an example of convergent evolution. The two species appear to be one because they have evolved in similar environments and similar traits were favored for survival. |
| What reason does Shubin give as to why Tiktaalik might have used its limbs to get out of the water? | to escape predation |
| What is the importance of the HOX gene? | they code for body development |
| If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following should least likely be observed in the algae-eater population over the course of many generations? | selection for larger female algae-eaters, bearing broods composed of more, and larger, young \ |
| 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: | humans and chimpanzees share a relatively recent common ancestor. |
Created by:
Jeevana