7C/D Tutorials

What is natural selection?

• When reproduction occurs and mutations happen.

• When a offspring has the traits from its parents.

• When an organism is able to camoflauge in its environment.

• the process whereby organisms that are better adapted to their environment tend to survive and reproduce more offspring.

In a cold environment what would be some adaptive traits? Sellect all that apply.

• thick blubber

• thick fur

• thin fur

• strong muscles

What is a mutation?

• When animals have extra legs

• When a frog has 3 eyes

• When genes or DNA have been alterd or changed

• When RNA is upside down

What is a trait?

• a color

• the quality or characteristic of an organism

• the DNA of an organism

• when mutatuons cause extra limbs.

What is an adaptive trait?

• A genetic trait that helps an organism to maximize its survival and reproduction ability

• A trait that makes an animal strong

• a trait that makes an animal weak

• a poisonus plant

What is a non-adaptive trait?

• a trait that does not help an organism surive and reproduce.

• a trait that causes animals to be come more fit

• a trait that allows animals to camoflauge

• it causes a mutation

Can mutations be passed down to offspring?

• Yes

• No

Why do offspring share traits from both parents?

• offspring choose the traits they want

• offspring get 75 percent of the traits from their father

• offspring get 50 percent of each parents DNA

Differences in traits are called:

• natural selection

• genetic variations

• artificial selection

• adaptations

A species could go extinct if:

• food becomes more plentiful.

• members of the species have adaptations to enhance survival.

• the environment changes drastically and no one can adapt.

• there is less competition for resources.