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bio chapter 11 retak
| Question | Answer |
|---|---|
| the combined alleles of all the individuals in a population is called the | gene pool |
| what are two main sources of genetic variation | mutations and recombination |
| what type of selection occurs when individuals in a population with the intermediate phenotype are selected for | disruptive |
| when a few individuals start a new colony it most likely results in | genetic drift through the founder effect |
| the movement of alleles from one population to another is called | gene flow |
| a population that has a normal distribution of the range of heights has many individuals who are | average height and few who are very tall or very short |
| what does being in hardy-weinberg equilibrium mean for a population? | the population is not evolving |
| if the actual allele frequencies in a population do not match genotype frequencies predicted by the Hardy-Weinberg equation, the population is | evolving |
| which of the five factors that can lead to evolution would operate on a change in body color that enabled animals to better hide from predators | natural selection |
| reproductive isolation occurs when | members of different populations can no longer mate successfully |
| what type of isolation occurs when the timing of reproduction is different between two populations? | temporal |
| coevolution is a process in which species | evolve in response to changes in each other |
| two species that are closely related become increasingly different through | divergent evolution |
| a population of squirrels that contains a wide range of phenotypes has a | large amount of genetic variation |
| mutations in the DNA of genes that can be passed on to offspring | result in increased genetic variation |
| in a population of foxes, tail length shows a normal distribution. On a graph, this frequency would produce what kind of curve? | bell-shaped |
| disruptive selection occurs when selective pressures favor phenotypes that are | at both extremes |
| a tsunami has destroyed almost all of the palm trees in an area. this event will most likely lead to | genetic drift through the bottleneck effect |
| what occurs when some elephants in a population migrate into another area and join another population | gene flow |
| a river has cut a deep canyon that has separated a population of rodents into two groups. this separation is an example of what type of isolation | geographic |
| the evolution of hummingbirds' beaks and plants with deep tubes in their flowers is an example of | coevolution |
| to be in hardy-weinberg equilibrium, a population must be | very large, have random mating, no gene flow, no mutations, no natural selection |
| when individuals from two populations of squirrels can no longer successfully mate with one another, the chance that speciation will occur | increases |
| the wings of robins and the wings of dragonflies are examples of | convergent evolution |
| explain how speciation by adaptive radiation occurs after a mass extinction event | after a mass extinction takes place, a whole population is wiped out. that leaves the rest of the populations that were adapted to their living situations before the extinction took place to now go where ever they want. ex. dinos and mammals |
Created by:
jaliehass