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Evolution Exam 1 Study Guide Solutions

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Evolution Exam 1 Study Guide Solutions Biological evolution - ANSWER-Any change in the inherited traits of a population that occurs from one generation to the next (i.e., over a time period longer than the lifetime of an individual in the population) Change has to be passed down Encoded in gen...

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  • October 28, 2024
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  • Evolution
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Evolution Exam 1 Study Guide Solutions


Biological evolution - ANSWER✔✔-Any change in the inherited traits of a population that occurs from

one generation to the next (i.e., over a time period longer than the lifetime of an individual in the

population)


Change has to be passed down


Encoded in genes


Natural Selection - ANSWER✔✔-Mechanism that can lead to evolution, whereby differential survival and

reproduction of individuals cause some genetic types to out-compete others


NOT survival of the fittest ( only true if fittest means producing more offspring)


Started by random mutation which is helpful in the habitat


Passing these genes on is the MOST important thing


Descent with modification - ANSWER✔✔-1. Earth and life are OLD


2. New life-forms derive from older forms = macroevolution


3. All life-forms are related = Shared Ancestry


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4. Lineages split and diverge = speciation


5. Species change over time = microevolution


Marie Curie - ANSWER✔✔-Discovered radioactive isotope decay


Instrumental in development of radiometric dating (carbon dating)


Synapomorphies - ANSWER✔✔-A derived form of a trait that is shared by a group of related species (i.e.

one that evolved in the immediate common ancestor of the group and was inherited by all of its

descendants)


Convergent evolution - ANSWER✔✔-the independent origin of similar traits in separate evolutionary

lineages


Similar environments lead to similar adaptations in unrelated species


E.x. Both birds and bats evolved to fly but aren't closely related


Shared Ancestry - ANSWER✔✔-When two species share a common ancestor


All life can be traced back to one ancestor


The more two species share an ancestry, the closer related they are


Artificial selection - ANSWER✔✔-Evidence of microevolution (species change over time)



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When humans select for certain traits in a population, breeding animals so that those traits become

more common or exaggerated


Zoonosis - ANSWER✔✔-The process of infectious disease transmission between species


When a disease jumps from an animal to a human


Viral reassortment - ANSWER✔✔-Occurs when genetic material from different strains gets mixed into

new combinations within a single individual


Several strains of a virus come together, become more potent, can then attack humans


Charles Darwin - ANSWER✔✔-English naturalist


Trained at medical school


Traveled on the HMS beagle in 1931


Collected many fossils, living organisms


Studied geology


Developed the theory of evolution (descent with modification)


Published "On the Origin of Species"


Influenced by many who came before him


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