Concepts
The number of individuals with each trait in a population can_______ over time.
Change
Population
a group of the same type of organism living in the same area
In a histogram, what do the number of bars show us?
Over many generations, individuals with adaptive traits become more________ in a population, while individuals with non-adaptive traits become less__________.
Common
Distribution
the number of individuals with each trait in a population
Individuals within a population can have different what(s)?
Traits
Trait
a specific characteristic of an individual organism
In a histogram, what do the bar heights show us/represent?
How many individuals/organisms/animals in a population have a trait
Populations can ______ if they do not have individuals with adaptive traits.
die or die out
Histogram
a graph that uses bars to show how characteristics or values are distributed within a group
What are we trying to figure out about the Rough-Skinned Newt?
why the population has become more poisonous over time.
Generation
a group of individuals born and living at the same time
Histograms are helpful for studying______ in populations.
Change
Low fur levels are______ traits in a cold environment.
non-adaptive
Variation
any difference in traits between individual organisms
Models like histograms are helpful for studying changes in populations because in nature these changes happen very________.
slow or slowly
Environment
everything living and nonliving that surrounds an organism
The Amplify simulation can show us histograms about different traits. Name one that we've studied.
-jaw strength
-thorn size
-fur
-height
-color
High fur levels are __________ traits in a cold environment.
adaptive
Inherit
to receive genes from a parent
Changes in traits can happen because of an organism's ___________.
environment
Organism
a living thing or being
A histogram with no variation will have how many bars?
one
What is a non-adaptive trait?
a trait that makes it less likely that an individual will survive in a specific environment
Adaptive trait
a trait that makes it more likely that an individual will survive in a specific environment