basic info Flashcards

1
Q

what is Evolution in simplest form?

A

Change in a population over time

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2
Q

Is evolution a real thing, and is it a law or hypothesis?

A

yes, evolution happen(s) Confusion arises sometimes as to whether evolution is a theory or a fact, it’s both.

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3
Q

What is natural selection?

A

Individuals better adapted to their environments is then able to survive and reproduce more often than less well adapted individuals. (aka fitness)

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4
Q

what are the Steps of evolution by natural selection

A

Genetic variant is added to genotype by mutation
Mutations lead to changes in the phenotype
Phenotype is acted upon by natural selection
Individuals more suited to environment produce more offspring(contributed more to total gene pool of population) AKA the fitness level
Populations gene pool changes over time
Speciation may occur if geographic and reproductive isolating mechanisms exist
.

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