Common Ancestry Unit Review

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They descended from a common ancestor

• All organisms resemble humans

Bird wings and butterfly wings are both used for flying but have completely different structures, they are an example of

• Homologous structure
• Analogous structure
• Mimicry
• Camoflague

Analogous structures are evidence of common ancestry among organisms.

• True
• False

Using Data Table 1, which organism shares a most recent common ancestor with rabbits?

• Fly
• Bat
• Tree
• Bacterium

Using the Data Table 1, which organism is least related to rabbits?

• Fly
• Bat
• Tree
• Bacterium

Two of the organisms seemed to be more closely related to each other than to the other vertebrates. The type of evidence shown is using the field of — 

• comparing anatomy/homologous structures 

• DNA sequences 
• biochemistry
• fossil record

 The embryos of fish, chicken, and pigs all have gill slits and tails. The presence of these common features suggests that:-

•   Gill slits and tails are required for embryonic development
• Pigs and chickens are closely related
• These animals share a common ancestor

•     All these animals can swim

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

• Embryological development

• fossil record
• homologous structures

• DNA/Amino Acid sequences

Which of the following is NOT used to support the theory of evolution?

• DNA Sequence

• Fossil Record

• Acquired Heritable Traits

• Embryological Development

The five species illustrated most likely have

similar limb structures because they all -

• share a common ancestor

• use their limbs for the same functions

• occupy the same level on the food pyramid

• adapted to the same environmental conditions