Variation
Werds
Scenarios
Misc
100

An example of variation in a species

Open ended

100

Evolution

Change in a population over time

100

What trait is being selected for?

Dark color in moths

100

Are the weeds evolving? How do you know?

Yes, a greater percentage of the population has adapted herbicide resistance.

200

How rock pocket mice varied

color: light/dark

200

Fitness

An organism's ability to survive to reproduce

200

What is driving selection for different beak shapes? 

Terrain/environmental differences (sand/water depth)

200

Is eevee evolving? Why?

No. Individuals do not evolve. 

300

An environmental factor that has lead to variation in humans.

UV/the tilt of Earth's axis

300

Adaptation

A physical or behavioral trait that increases an organisms fitness

300

Short legged cheetahs have stronger bones resistant to breaking. Long legged cheetahs have increased speed but more fragile bones. Over time, what will most cheetahs look like?

300

In which population is the recessive phenotype most likely increasing?

Population D

400

Why is variation important for natural selection?

It allows for a range of traits for selection to act on.

400

Selective Pressure

An environmental factor that causes some phenotypes to be favored over others

400

In salmon, large males are better able to fight off competing males for breeding. Small males are able to "sneak by" larger males to find mates. 

What will salmon look like over time. 

400

Compare the selective pressures acting on population A and B

They are both selecting for allele A over allele B

500

What determines whether a mutation is good, bad, or neutral?

The environment

500

Artificial Selection

When humans, not nature, determine what traits are valuable/passed on.

500

Desert frogs are capable of producing cocoons of mucus and dead skin cells. What could have selected for this adaptation and why?

Dryness of the desert/water retention

500

Huntington's Disease is an inherited neurologic disease that onsets in a person's 30s-40s. It has severe impacts including loss of motor function, cognitive decline, and behavioral changes. 

Why has HD persisted in the human population?

It doesn't onset until after many people have already had children.