common ancestry

Scientists compare the limbs of organisms to look for evidence of common ancestry. These limbs provide evidence of common ancestry because they -

• perform the same function
• are the same size
• have the same basic structure
• are parts of the same animal

Tags

NGSS.MS-LS4-2

Which evidence of common ancestry is being studied in this visual?

• developmental homology
• molecular homology
• anatomical homology

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The similarities among early stages of the embryos provide evidence that -

• these organisms evolved from a common ancestor
• the organisms all retained their gills and tails
• the organisms belong to the same species

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The picture shows the members of the Camelidae family. The physical features and the geographical origin of these animals provide evidence that - 

• they live in the same type of environment.
• have slowly evolved to become herbivores.
• have a common ancestor.
• exchanged DNA in the past.

Tags

NGSS.MS-LS4-2

  If two organisms have the same structures (even if they have a different function ex: leg bones of various mammals), it is considered _________________, but if they have different structures that perform the same function (ex: wings of birds and butterflies), it is considered ____________________.

• Analogous; Homologous
• b. Helpful; Harmful
• c. Homologous; Analogous
• d. Harmful; Helpful

Tags

NGSS.MS-LS4-2

 Using the cladogram to the right, flies are most closely related to:

• Beetles
• Wasps
• Butterflies
• Ants

Tags

NGSS.MS-LS4-2

Using the cladogram to the right, which organism(s) do not have jaws?

• Lancelet
• Leopard
• Turtle
• Tuna

Tags

NGSS.MS-LS4-2

 The evolutionary pathways of five species are represented in the diagram above.
Which statement is best supported by the diagram?

• Species C and Species D are related to species X
• Species C  is the ancestor of species B
• Species X evolved later than species D but before B
• Species D and E evolved from species B

Tags

NGSS.MS-LS4-2

Chicks and humans both have gill slits during development. What does this tell us about chicks and humans?

• Their embryos use gills to breathe during development.

• They both evolved from a common ancestor who had gills.

• Chicks are able to breathe underwater.

• They evolved from different ancestors.

Tags

NGSS.MS-LS4-2

Which statement can be best supported by the pictures of the embryos.

• Chickens are more closely related to tortoises than rabbits are.

• Rabbits, chickens, tortoises, and fish are all equally related to each another.

• Fish do NOT share a common ancestor with other vertebrates.

• Fish and chicken are the least closely related.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3