Evidence of Evolution

Which of the pictures above would be examples of homologous structures?

• 1 & 2

• 1 & 3

• 2 & 3

The flipper of a whale and the arm of a human have a similar bone structure, but different functions.

• vestigial structures

• homologous structures

• similar embryos

• molecular evidence

The earliest stages of development in a chicken and fish have gill slits and a tail.

• fossil evidence

• analogous structures

• molecular evidence

• comparing embryo structure

The leg bones of a whale are present, even though they are no longer in use.

• homologous structures

• vestigial structures

• comparing cell structures

• comparing biochemistry

Some humans have a non-functional muscle in their arm(s) called the palmaris longus.

• analogous structures

• molecular evidence

• vestigial structures

• comparing embryos

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment
• The organisms shown may have developed from a common ancestor
• The organisms shown have the same genetic diseases
• All vertebrate species have identical forelimbs

Tags

NGSS.MS-LS4-2

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

• Species I
• Species II
• Species III
• Species IV

The legs in the picture are:

• Homologous structures

• Vestigial structures

• Analogous structures

• Funny looking

Structures that come from a common ancestor but may not have the same purpose:

• homologous structures

• Homo sapiens

• analogous structures

• vestigial structures

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment
• The organisms shown may have developed from a common ancestor
• The organisms shown have the same genetic diseases
• All vertebrate species have identical forelimbs

Tags

NGSS.MS-LS4-2