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Biology ch 15,16
Question | Answer |
---|---|
What is the name o f Dawins boat?? | HMS Beagle |
What were two animals that Darwin found adapted to the enviroment?? | Turtles and Finches |
What was so different about the finches? | Their Beaks |
How many years did Hutton think the earth was? | thousands |
What did Darwin notice about the finches and tortoises on the Galapagos Islands? | Each island had a slightly different version of the same species. |
Darwin noticed that the differences in animals on the Galapagos Islands helped them to | survive |
Which scientists suggested that the Earth is many millions of years old? | Hutton and Lyell |
Of Lyell and Hutton, which one tried to explain how rock formations change over time? | Hutton |
Which scientist proposed that animals can pass on adaptations to their offspring. | Lamarck |
Lamarck said that an animal’s body can change due to its... | actions |
An acquired characteristic is... | a trait an animal gained through actions in their lifetime |
What was Darwin’s book called? | On the Origin of Species |
Which scientist suggested that human population would grow so much there wouldn’t be enough food? | Malthus |
Did Darwin publish his findings immediately, or after many years? | after many years |
Who wrote an essay about evolution that motivated Darwin to go ahead and publish his book? | Alfred Russel Wallace |
What is the ability of an organism to survive and reproduce where it lives? | fitness |
When an animal has body parts that have no use for them anymore, those parts are called... | vestigial structures |
When animals have body parts that are very similar to each other, those parts are called.... | homologous structures |
An adaptation is an inherited characteristic that helps... | that animal survive |
True or False: Adaptations are only physical. | False; they could also be a behavior |
When fossils and living animals have very similar body parts, scientists assume that they have... | a common ancestor |
What did Darwin believe was one of the biggests evidences of evolution? | the fossil record |
The percentage of black cats in a cat population is an example of... | relative frequency of an allele |
Two big sources of genetic variation are... | mutations genetic shuffling during meiosis |
What is a single-gene trait? | A trait that has one gene (two alleles) that controls it. |
What is a trait called that is controlled by two or more genes? | polygenic traits |
When does directional selection occur? | When individuals have more fitness on one side of the peak. |
When does stabilizing selection occur? | When individuals have more fitness at the peak. |
When does disruptive selection occur? | When individuals have more fitness on both sides of the peak, but not at the peak. |
A random change in allele or trait frequency over time is called... | genetic drift |
What are the five conditions required to maintain genetic equilibrium? | random mating large population no immigration or emmigration no mutations no natural selection |
What is the term meaning the formation of a new species? | speciation |
What is the definition of “species”? | A group of organisms that can breed and produce fertile offspring |
Behavioral isolation, geographic isolation and temporal isolation can all lead to... | reproductive isolation...the inability of species to interbreed and produce offspring |
Two birds having different types of songs to attract mates is a type of which isolation? | behavioral isolation |
When two populations become separated by bodies of water or mountains, it is what type of isolation? | geographic isolation |
If flowers produce pollen at different points of the Spring season, it is what type of isolation? | temporal isolation |