Homologous / Analogous Structures

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

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Tags

NGSS.HS-LS4-1

A fossil of an extinct dinosaur is found and the anatomy of the fossil shows similarities to that of a bird. What could this mean?

• This is purely by chance and isn't significant
• The extinct dinosaur and modern bird share a common ancestor
• All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today
• Dinosaurs choose to fly, and evolved into birds to escape predation and capture food

Tags

NGSS.HS-LS4-1

These bones are an example of homologous structures because.... (select ALL that apply)

• developed from a similar ancestor

• have a similar shape

• have the same function

• part of the same animal

Tags

NGSS.HS-LS4-1

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

These bones are an example of homologous structures because.... (select ALL that apply)

• developed from a similar ancestor

• have a similar shape

• have the same function

• part of the same animal

Tags

NGSS.MS-LS4-2

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial