NS 1
A_____ can be described by the traits present and by the number of individuals who have each trait?
Population
A group of the same type of organism living in the same area
__________ are instructions for making protein molecules and protein molecules determine an organism's traits.
Genes
Individuals with ___________ traits are more likely to live longer and have offspring.
Adaptive
Parents choose the genes they pass down to their offspring.
True of False?
False
Definition of Environment
Everything(living and nonliving) that surrounds an organism
The _________ of individuals with each trait in a population can change over time.
Distribution
Individuals with ____________ traits are more likely to die without having offspring.
Non-adaptive
Individuals in a populations with _________ traits become less common.
Non-adaptive
Definition of mutation
A random change to a gene that sometimes results in a new trait
Traits introduced by mutation will always become more common in a population
True or False
False
Over many generations, individuals with _______________ become more common in
a population, while individuals with _________________ become less common.
Adaptive traits; Non-adaptive traits
Over many generations, individuals with __________ traits become more common in a population.
Adaptive
Any difference between cells, individual organisms, or groups of organisms of any species is called
Variation
Where do the genes that determine an individual's traits come from?
Parents pass their genes down to their offspring
The newt population became more poisonous over time because of...
The number of individuals with each trait in
a population ________________ over time.
Can stay the same or change
Change.
How do genes determine an individual’s traits?
Genes are instructions for making protein molecules and protein molecules determine traits.
The poison of the newt was a(n) __________________________ against the snakes in the environment.
Adaptive trait.
Whether or not a trait is adaptive depends on the _________.
Environment
What can happen when the environment changes too quickly for populations to adapt?
The population dies out.
Changes to genes that can lead to changes to protein molecules, which can result in changes to traits are called __________
Mutation
What is this process called?
Organisms better adapted to the environment are more likely to survive and reproduce than organisms who aren’t adapted to the environment.
Natural Selection
Genes, and therefore traits, in a population are passed down from __________ to _________.
Generation to Generation
Organisms better adapted to the environment are more likely to survive and reproduce than organisms who aren’t adapted to the environment because of what process?
Natural selection