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- 1. Multiple Choice
Two organisms that are closely related will have _________ differences in their DNA.
at least 20
No
More
Fewer
- 2. Multiple Choice
_________ structures are those that were useful to an ancestor of a present-day species, but are no longer useful.
ferruginous
vestigial
homologous
analogous
- 3. Multiple Choice
Opossum tails are used for gripping. Whales use their tales to propel them through the water. These are the same structure (a tail) with a different function. These structures are...
ferruginous
homologous
analogous
vestigial
- 4. Multiple Choice
Two species are said to be closely related based on the fact that they have a similar number of bones in their front legs. This is an example of...
structural evidence
embryological evidence
DNA evidence
Fossil evidence
- 5. Multiple Choice
A turtle's shell and the shell of a crab both act as protection. However, they have a different embryological origin. They are different structures with the same function. They are ________ structures
analogous
homologous
vestigial
ferruginous
- 6. Multiple Choice
Two species look very similar during the earliest stages of development. As they grow and change, they look similar for a very long time until they finally reach a stage where they develop structures unique to each species. We know these species are related due to _________ evidence.
embryological
structural
fossil
DNA
- 7. Multiple Choice
When looking at DNA evidence, scientists may count the number of bands (dark lines) of DNA. Species with the fewest number in common are __________ related.
most closely
most distantly
- 8. Multiple Choice
A cladogram is a branching tree diagram used to show evolutionary relationships.. The points on the diagram where branches meet represent...
time
a common ancestor
an extinct species
vertebrates
- 9. Multiple Choice
In a cladogram, the more recent species are at the top. The common ancestor of all the species is at the bottom. This means, as you go from top to bottom on a cladogram, you go further back in________.
embryology
DNA
the fridge
time
- 10. Multiple Choice
Penguins and Polar Bears both live in cold parts of the planet. They both need to stay warm to survive. To accomplish this, Penguins have thick feathers and Polar Bears have fur. Polar Bear fur and Penguin feathers are different structures with the same function. They are...
paralytic
mucigenous
homologous
analogous
- 11. Multiple Choice
In this cladogram, humans are most closely related to _______ and most distantly related to ________
birds, prosimians
amphibians, birds
insects, prosimians
prosimians, insects
- 12. Multiple Choice
Insect wings and bird wings are both used for flying. However, they grow out of very different groups of cells as the embryo develops. They are different structures with the same function. They are...
analogous
gregarious
homologous
homogenous
- 13. Multiple Choice
A scientist finds a fossil in a layer of rock known to be 75 million years old. In another layer of rock, further down, he finds another fossil that looks similar but is definitely different. Based on this fossil evidence, the second fossil may be the ________ of the first.
homologous
ancestor
embryo
DNA
- 14. Multiple Choice
Species change over time in response to pressures from their environment. They develop adaptations that help them get food and reproduce. This change over time is called...
common ancestor
development
evolution
adjustment
- 15. Multiple Choice
One species that existed long ago over time gave rise to multiple species. That original species is the _________________ of all the species that arose from it.
common ancestor
common location
common ground
commonality
- 16. Multiple Choice
The species indicated at point "1" is the common ancestor of...
A,B, and C only
B, C, and D only
Only D
A, B, C, and D
- 17. Multiple Choice
A, B, C, and D represent species that are...
extinct
existing today
ancestors of modern species
long dead
- 18. Multiple Choice
The species at point "1" is the common ancestor of...
B and C only
A and D only
A, B, and C
C and D only
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