Natural Selection, Dichotomous Key

What is most likely to happen to moth populations in the picture shown?

• Light moths--hunted easily, dark moths--population increase

• Light moths--hunted easily, light moths--population increase

• Dark moths--hunted easily, dark moths--population increase

• Lights moths will change their color to match dark moths.

A yellow insect and green insect lives in the rainforest canopy. You would expect:

• the green population to increase and the yellow to decrease

• the green population to decrease and the yellow to increase

• both populations should stay the same

Small changes over time that add up to big changes are referred to as:

• morphs

• extinction

• natural selection

• artificial selection

A species could go extinct if:

• food becomes more plentiful.

• the environment changes drastically and no one can adapt.

• members of the species have adaptations to enhance survival.

• there is less competition for resources.

Organisms that are able to mate with one another are called:

• animals

• extinct

• DNA

• species

Darwin's first observations of natural selections involved:

• moths

• birds

• jaguars

• fossils

TRUE or FALSE: Natural selection will still occur if each individual has the same exact traits

• true

• false

Differences in traits are called:

• natural selection

• artificial selection

• variations

• adaptations

Adaptations can be:

• camoflage

• beak shape

• ability to survive cold weather

• all of the above

Selective breeding or natural selection: horses with small hooves are put together to mate

• selective breeding

• natural selection