Similar DNA Common Ancestor

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.MS-LS4-1

NGSS.MS-LS4-2

The diagram illustrates an embryonic stage of two organisms.

Which of the following can be determined by observing the embryos shown in the diagram

• The organisms share a common ancestry.

• The organisms belong to the same genus.

• The organisms are native to the same geographic areas.

• The organisms will grow into anatomically similar adults.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The picture shows a/an ___________

• homologous structure

• vestigial structure

Tags

NGSS.MS-LS4-2

The opossum and kangaroo both incubate their young in a pouch. This provides evidence that they---

• are descended from a common ancestor

• Have very similar skeletal structures

• belong to the same species

• must range great distances to eat

Tags

NGSS.MS-LS4-2

Similarities in bone arrangements, like those in the picture, support the hypothesis that...

• these organisms are not well adapted

• these organisms share a common ancestor

• these organisms all share the same DNA sequences

• these organisms are members of the same species

Tags

NGSS.MS-LS4-2

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection

• embryology

• speciation

• evolution

Tags

NGSS.MS-LS4-3

What is a structure that is similar across species?

• vestigial

• homologous

• adaptaion

• variation

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

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

According to this data, the unknown bacterial species is most closely related to: 

• Species I

• Species II

• Species III

• Species IV

Tags

NGSS.MS-LS4-4

Which species’ DNA is most similar to the DNA of the toothed whale? 

• Hippopotamus 

• Baleen Whale

• Grazing Mammals

• Camels

Tags

NGSS.MS-LS4-2