Natural Selection + Dichotomous Key

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.

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.

Which of these are possible traits of a rattle snake?

Select all that apply

• venom

• rattle

• hair

• legs

• scales

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

What happens when DNA or a gene is changed?

• A trait is made

• A trait is lost

• A mutation may occur

• A non-adaptive trait will be lost

What is a gene?

• sections of DNA

• sections of UNA

• a trait

• an adaptive trait

Do genes code for traits?

• yes

• no