Evolution Review

A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes on those traits to his offspring. This process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-4

Where do adaptations come from?

• The individual organism decides to adapt

• Mutations that give an organism an advantage in its environment

• Genetic recombination during meiosis

• Both mutations and genetic recombination are sources of adaptation

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• changes in genotype, but not phenotype

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Do organisms "decide" to evolve and change? (they have the ability to change whenever they want)

• Yes, they know they need to change to survive 
• No, they change because of natural selection

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

The arm of a human, the flipper of a whale, and the wing of a bat all have similar bone structures. Therefore, these parts of the body would all be considered...

• homologous structures

• vestigial structures

• transitional fossils

• common ancestors

Tags

NGSS.HS-LS4-1

The tail bone, wisdom teeth, and appendix are all parts of the human anatomy that would be considered...

• homologous structures

• vestigial structures

• fossils

• extinct

Tags

NGSS.HS-LS4-1

A bird's wing and a butterfly's wing have the same function, but they have very different structures. These structures are classified as follows:

• homologous structures

• analogous structures

• vestigial structures

• embryological homologues

Tags

NGSS.MS-LS4-2

Two organisms that are closely related would have

• very similar DNA sequence

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequence

Tags

NGSS.HS-LS3-1

NGSS.HS-LS4-1

The study of embryological development provides anatomical evidence for evolution because...

• all vertebrate embryos pass through the same stages of development in the same sequence.

• all vertebrates are born with gills and a tail.

• all vertebrate embryos have completely different stages of development that look nothing alike.

• all plants and animals have wings, even if you can't see them when they are born.

Tags

NGSS.HS-LS4-1

The fossil record helps to build a timeline of life on Earth because...

• the older a fossil is, the deeper it will be found within layers of sedimentary rock.

• the older a fossil is, the closer it will be to the surface layers of sedimentary rock.

• gaps in the fossil record tell us all of the detailed changes to life on Earth during that gap.

• fossilized clocks from millions of years ago tell us exactly what time it was when specific events happened.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1