Biology Unit 6c Macroevolution Review

change in a DNA sequence that affects genetic information

• mutation

• fitness

• transformation

study of the distribution of organisms around the world

• herpetology

• biogeography

• evolution

the branch of biology concerned with the study of embryos and their development.

• embryology

• biogeography

• oncology

If a new trait DOES help an organism survive, what may happen to it?

• It dies and its DNA is not passed on

• It survives and its DNA is passed on

• It changes its traits to adapt and survive

What could cause a species to go extinct?

• Food becomes more plentiful.

• The environment changes drastically and no-one can adapt.

• There is less competition for resources.

• Members of a species have adaptations to enhance survival.

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 have a common ancestor
• All organisms resemble humans

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

• Hippopotamus 
• Baleen Whale
• Grazing Mammals
• Camels

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

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

According to this cladogram, birds are LEAST related to -

• Amphibians
• Sharks
• Ray Finned Fish
• Crocodiles

Which trait do only humans have, according to the cladogram?

• jaws
• mammary glands & hair
• terrestrial during all life stages
• opposable thumbs