1. All mammals experience hiccups. A recent explanation for the hiccups states t

Question

1. All mammals experience hiccups. A recent explanation for the hiccups states that this involuntary behavior is inherited from lungfish, which need to pump water across their gills while keeping it out of their lungs. In mammals, hiccups are ____? a) a vestigial trait b) undergoing natural selection c) a result of convergent evolution

2. Two populations of orca (killer whale) inhabit the same waters off the western coast of North America. “Resident” orcas live in large family groups and feed mainly on fish. “Transient” orcas travel in groups of two to six and hunt marine mammals. Transient and resident orcas also differ in fin shape and body color pattern. The two populations may be in the early stages of __________. a) sexual selection b) allopatric selection c) sympatic selection

3. The Eupleridae family, native to Madagascar, consists of 10 very diverse species of small carnivores. These species are thought to decend from a single mongose population between 24 and 18 million years ago. Which of the following was NOT a factor in the evolution of this mammalian family? a) there was interbreading among newly formed populations b) natural selection resulted in differences among new populations c) natural selection lowered the genetic diversity of the original population

4. For variation to be a meaningful contribution to evolution, what must be true? a) the traits that vary in ways meaningful to evolution have genetic components b) the variation must only happen as a result of genetic mutation c) the variation must happen through genetic drift

5. What feature is least likley to allow natural selection to act on the population? a) naturally occuring mutations in DNA produce new alleles b) differences between individuals make some better to obtain food c) variation in the enviroment allows some offspring to grow more than others

6. Which process is absolutely necessary for evolution to occur? a) mutation b) recombination c) natural selection

7. A small population of animals is likely to experience a change in allele frequencies in its gene pool if ____? a)each individual has an equal chance of reproducing b) a natural disaster kills a portion of the population at randon c)the population is geographically isolated from other populations

8. Two populations of crickets have stopped interbreeding over time, although they reside in the same geographic region. What is one possible explanation? a) they have experienced reinforcement becuase of a reconnection at a hybrid zone b) they have developed a temporal isolation, a kind of prezgotic barner c) postzgotic barriers prevent fertilization events from occuring

9. The wisent, or European bison, shown here was popular for hunting in the early twentieth century. While wisent populations have since recovered, at their smallest, they totaled 19 individuals. Existing wisent are, therefore, most likely to show which of the following? a) low genetic, diversity due to genetic drift b) new alleles due to a population bottleneck c) harmful mutations due to netural selection

10. The dugong is most closely related to elephants and mammoths. The porpoise is in the same family as whales. Both share the same fluke-shaped tail. The flukes of the two mammals best exemplify __________. a) divergent evolution b) convergent evolution c) analogous, but not homologous, structures

11. A species found in only a few, isolated populations separated by large distances. Which explanation of how these populations arose describes vicariance? a) small groups immigrated from a single original population b)the populations adapted in different ways to local conditions c) the species original habitat became increasingly rare over time

12. Two organisms mate and have offspring. How could you test to see if the parents were the same species? a) test to see if the offspring resemble one of the parents or the other more b) test to see if the offspring are fertile c) test tosee if the offspring thrive in the natural enviroment of their parents

Explanation / Answer

1. All mammals experience hiccups. A recent explanation for the hiccups states t

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.