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Vocab 1
Vocab 2
Key Concepts
Newts
Sticklebacks
100

The general term for an observatable feature, characteristic, or behavior of an organism.

Trait

100

A group of organisms of the same species living in the same area.

Population

100

The number of individuals with each trait in a population can ______________

change over time.

100

What type of trait can a newt use to defend against predators?

Posion, or posionous skin
100

What do sticklebacks have under their skin to protect from predators?

Osified (bony) armor plates
200

The time between parents and offspring.

Generation

200

Codes for proteins.

Genes

200

Whether or not a trait is adaptive depends _____________

on the environment

200

What specific species of newt did we study in class?

Rough-skinned Newt

200

How big is a stickleback?

The size of your finger/a few inches.

300

Where an organism lives

Environment

300

Builds different traits.

Protein Molecule

300

A new trait will only become more common in a population if ____________

it is adaptive.

300

What is a major predator of newts, even if they are slightly toxic (be specific)?

Garter Snakes

300

Name a trade-off for stickleback adative traits.  If a stickleback has more armor it moves _______.

slower. 
400

What you think will happen, an educated guess.

Prediction

400

A change in DNA

Mutation

400

_____ are instructions for making protein ________ and protein molecules determine an organism's ______.

Genes; molecules; traits. 

400
Some newts are so toxic that they can kill whatever eats it.  How can a predator tell how much toxin a newt contains?
Some gartner snakes can taste the toxin directly on the newts' skin.
400

Dragonfly nymphs move into an area where there are sticklebacks living.  Predict what could happen to the stickleback population over time.

The population could either go extinct OR become faster because only fast sticklebacks would survive to reproduce.

500

When a characteristic of an organism allows it to survive in an environment.

Adaptive Trait

500

When an organism has a characteristic that does not allow it to survive in an environment.

Non-adaptive Trait
500

___________ can introduce new genes and thus ultimately new _______ into a population.

Mutations; traits

500

A newt population in the past mostly contains newts that are not toxic.  30 generations later, the population contains a majority of newts that are very toxic.  Infer what happened to the newt's environment over time.

A predator that eats newts must have moved into the area, and only the newts that were toxic were able to survive to reproduce.

500

Salmon move into an area where sticklebacks are living.  Predict what could happen to the stickleback population over time.  

The population could either go extinct OR increase their amount of armor because only armored sticklebacks would survive to reproduce.