Science Pre-AP

Question Answer
Evolution the process in which population changes over time
What are the types of evolution? microevolution and macroevolution
Microevolution evolution or change on a small scale
Macroevolution evolution or change on a large scale
Population Genetics the science that studies the change in distribution of traits within a species population (A.K.A gene pool)
Species Organisms that are so genetically similar that they have the potential to breed and produce that are viable and fertile
Viable living
Fertile able to reproduce eventually themselves
What four criteria is population defined by? Same species of organism
Located in the same location
At the same time
And showing signs of reproduction (offspring is present within the group)
Geographic Range the geographical area within which a species can be found
Organisms that are common may have… several populations that cover a wide range
What is one example of a range that is global? humans
Geographic Barriers large mountains or bodies of water
Do individuals evolve? no; but populations do
Can you change DNA? no
Mutations random changes that occur in an organism’s DNA. Some help individuals survive in their environment and reproduce and some do not. Other mutations have no effect
If a mutation (change) occurs in the DNA of sex cells (gametes) of the parent(s) then what happens? changes can be inherited by the offspring
Allele Frequency how many alleles are present at that time within the population
Fixed there is no change in frequency; no evolution is present (a state of equilibrium)
Evolving frequency is changing; evolution is occurring (a state of change over time)
There are always how many traits for an allele? 2

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