Vestigial Structures

What is a Vestigial Structure?

• Structures that have a common function and suggest common ancestry
• The traits of organisms that result from sharing a common ancestor: such traits often have similar embryological origins
• genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species
• I don't know :(

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is one observation that someone could make from this image?

• They are birds
• They eat worms
• They fly
• They talk

what are vestigial organs

• leftover organs that aren't used
• very useful organs that are needed for life

Tags

NGSS.MS-LS4-2

If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative
• early ancestor
• unrelated organism
• embryological stage

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the wings of an ostrich

Tags

NGSS.MS-LS4-2

What is an example of a vestigial structure of a whale?

• The solar system
• Tail bone
• The Pelvis and the Femur
• Batman (could be...you never know..)

Tags

NGSS.MS-LS4-2

What is one inference that someone could make from this image?

• That Red One
• Mr Kent :)
• The white bone doesn't get passed on.
• Obviously the bone highlighted red was the favorable trait.

Why is studying the embryos of organisms important (in evolution)?

• provides evidence that two very different animals could have descended from a common ancestor
• have no idea

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is an example of a vestigial structure of a HUMAN?

• Femur
• Wisdom Teeth
• Brain
• Finger

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

vestigial structure; original function unknown

• Duodenum
• Stomach
• Rectum
• Appendix