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Biology 20 Alberta: Evolution Questions and Answers 100% Pass
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Biology 20 Alberta: Evolution Questions and Answers 100% Pass What do adaptations result from? - Gradual change in the characteristics of members within a population over time Variation - A visible or invisible difference that helps an individual survive is likely to be passed on from survivor...

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  • January 8, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • biology 20 alberta evolution questions and answer

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  • Biology 20
  • Biology 20

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Biology 20 Alberta: Evolution
Questions and Answers 100% Pass

What do adaptations result from? - ✔✔Gradual change in the characteristics of members within a

population over time


Variation - ✔✔A visible or invisible difference that helps an individual survive is likely to be passed on

from survivor to survivor


Genetic Mutation - ✔✔May provide an individual with a selective advantage or a disadvantage, or

neither (neutral)


Sexual Reproduction - ✔✔Offspring have a combination of genetic material from both parents (half from

mom, half from dad)


What happens if a mutation is beneficial? - ✔✔The organism will likely survive and pass on the mutation

(selective advantage)


What happens if a mutation is harmful? - ✔✔The organism will likely die and won't pass on the mutation


Selective Advantage - ✔✔The characteristic of an organism that enables it to survive and reproduce better

than other organisms in a population in a given environment


Selective Disadvantage - ✔✔The characteristics of an organism that make it harder for them to survive

and reproduce than other organisms in a population in a given environment


Bacterial Resistance - ✔✔Ability of bacteria to resist antibiotics




Author. Emily Charlene, ©2025 All Rights Reserved.

, 2|Page


Natural Selection - ✔✔Process by which a population of organisms changes because individuals with

certain traits can better survive the local environmental conditions and pass on these traits to their

offspring


Artificial Selection - ✔✔Process by which a population of organisms changes because individuals chosen

by humans to pass on desirable traits to their offspring


Scientific Theory - ✔✔Explains observations and ties them together in a comprehensive way, enabling

scientists to make predictions about new situations and experimental outcomes


What did Charles Darwin and Alfred Russel Wallace both develop hypothesis's for? - ✔✔Natural

selection


What did Lamarck believe in with evolution? - ✔✔Organisms have a "desire" to change for the better. Use

and/or disuse of structures is passed on to offspring. Inheritance of acquired characteristics


Example of Lamarcks "Theory": - ✔✔Giraffe neck length getting longer from generation to generation

because they stretched to reach the leaves


What did Charles Darwin discover on his voyage? - ✔✔Populations change as time passes, individuals

with physical or behavioural advantages are more likely to survive and reproduce, competition for

resources leads to survival of the fittest (unfit individuals die), and the theory of natural selection was

born


What two major points did Darwin make in his book? - ✔✔1. He presented evidence that the many

species of organisms presently inhabiting the earth are descendants of ancestral species


2. He proposed a mechanism for the evolutionary process, natural selection


Theory of Evolution (based off of inference) - ✔✔1: individuals of the same species are in a constant

struggle for survival. 2: individuals with more favourable variations are more likely to survive and pass




Author. Emily Charlene, ©2025 All Rights Reserved.

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