Homologous and Analogous Structures

1) What are the similarities? (Use at least 3 examples)

• They both have similar features.

• They are completely different.

• They have no similarities.

• They are identical in every way.

Tags

NGSS.MS-LS4-2

What are the Differences? (Use at least 3 examples)

• Differences include A, B, and C.

• Differences include X, Y, and Z.

• Differences include 1, 2, and 3.

• Differences include M, N, and O.

Tags

NGSS.MS-LS4-2

Do you think these organisms share a common ancestor?

• Yes, because they have similar structures.

• No, because they have different habitats.

• Yes, because they have similar DNA sequences.

• No, because they evolved independently.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Using your background knowledge, how are these six drawings of the Turtle, Human, Horse, Bird, Bat and Seal evidence for Evolution?

• They show homologous structures indicating common ancestry.

• They depict different species with no evolutionary link.

• They illustrate convergent evolution with similar adaptations.

• They represent random variations with no evolutionary significance.

Tags

NGSS.MS-LS4-2

Fill in the chart below and give the function for each anatomic structure: Match the animal with its function of structure.

• Horse

• Bird - The function of this structure is to help the bird fly.

• Bat

• Human - The function of this structure is to help the human grasp objects and balance.

• Bird

• Turtle - The function of this structure is to help the turtle crawl on the sand and swim when it is in the water.

• Human

• Horse - The function of this structure is to help the horse walk, stand and run.

• Turtle

• Bat - The function of this structure is to help the bat balance and achieve movement.

Tags

NGSS.MS-LS4-2

What are the similarities? (Use at least 3 examples)

• They both have similar features.

• They are completely different.

• They have no similarities.

• They are identical in every way.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What are the Differences? (Use at least 3 examples)

• Differences include size, shape, and color.

• Differences include taste, texture, and smell.

• Differences include speed, efficiency, and cost.

• Differences include height, weight, and age.

Tags

NGSS.MS-LS4-2

Do you think these organisms share a common ancestor?

• Yes, they share a common ancestor.

• No, they do not share a common ancestor.

• It is not possible to determine from the given information.

Tags

NGSS.MS-LS4-2

Using your background knowledge, how are these three pictures evidence for Evolution?

• They show similarities in structure among different species.

• They depict the process of natural selection.

• They illustrate genetic mutations over time.

• They demonstrate the survival of the fittest.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Explain the difference between Homologous Structures and Analogous Structures. Look up the difference between Homologous Structures and Analogous Structures. Then state what examples on the previous pages represent Analogous structures and Homologous structures below.

• Homologous structures have a common evolutionary origin, whereas analogous structures have a similar function but different evolutionary origins.

• Analogous structures have a common evolutionary origin, whereas homologous structures have a similar function but different evolutionary origins.

• Both homologous and analogous structures have a common evolutionary origin.

• Neither homologous nor analogous structures have a common evolutionary origin.

Tags

NGSS.MS-LS4-2