Evidences of evolution

The Urey-Miller experiment shows us the early conditions of Earth atmosphere, what was the experiment able to produce?

• simple molecules

• complex molecules

• DNA

• none of the above

The hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigal structures

Based on the number of differences in amino acid sequence, which pair of organisms is least related to each other?

• Fruit fly – Pigeon

• Human – Horse

• Fruit fly – Wheat

• Human – Wheat

The diagram above shows an embryo of different vertebrates at different stages of development. Which field of study would support the similarities in development as evidence for evolution?

• comparative biochemistry
• paleontology
• comparative biogeography
• comparative embryology

How do fossils help provide evidence for the Theory of Evolution?

• fossils show how all organisms have the exact same DNA

• fossils show that organisms had similar physical structures and how they have changed over time

• Shows how the different structures of organisms come from different origins

• fossils show how organisms may be related through DNA not structures

Genetic variation within a populations is positive for a species, but why?

• The fewer the genes the better suited for nature

• the more genes the more adaptable the species

• the more genes the less adaptable the species will be

• Its positive because it produces more forms

The fossil record helps to build a timeline of life on Earth because...

• the older a fossil is, the deeper it will be found within layers of sedimentary rock.

• the older a fossil is, the closer it will be to the surface layers of sedimentary rock.

• gaps in the fossil record tell us all of the detailed changes to life on Earth during that gap.

• fossilized clocks from millions of years ago tell us exactly what time it was when specific events happened.

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the tailbone of a human

The term hominid refers to what type of mammal?

• bears

• big cats

• primates and early humans

• raccons

Based upon the early Earth atmosphere which type of organism do you think developed first.

• aerobic, prokaryotes

• anaerobic, eukaryotes

• anaerobic, prokaryotes

• none of the above