Warm-Ups
What is natural selection?
Without the help of humans or anything artificial, traits in population are selected naturally
Variation
Any difference in traits between individual organisms
Non Adaptive Trait
Makes it less likely that an individual will survive in
Rough skinned newts are some of the most ______ animals in the Pacific Northwest
Poisonous
What is a feature?
Characteristic that all members of a species have, while a trait is something that an individual animal has.
Generation
Group of individuals born and living at about the same time
Feature
Characteristic that all members of species has
The number of individuals with each ____ in a population can change over time
Trait
The scientist uses ____ to research natural selection
Yeast
What can you tell from a histogram about a population?
The variation and distribution
The number of individuals with each trait in a population
Trait
Specific characteristic of an individual organism
Over many generations, individuals with _____ traits can become more common in a population
Adaptive
Lineages that developed ______ traits should be more common as they live long enough to pass on their genes.
Adaptive
How did the presence of snakes affect the distribution of traits in the newt population?
The snakes ate all the non-poisonous newts, causing the whole newt population to be poisonous
Environment
Everything living and nonliving that surrounds an organism
Prediction
Idea about what might happen that is based on what you already know
The traits that exist in a population determine which traits can become more common over many ______.
Generations
Adaptations
What is a population?
Group of the same type of organism living in the same area
Adaptive Trait
Trait that makes it more likely that an individual will survive
Cause
Event or process that leads to a result or change
Whether or not a trait is adaptive depends on the ______.
Environment
Deter