WorksheetsUnit 6 Concept 3 - Evidence for Evolution
Total questions: 18
Worksheet time: 30mins
By looking at the genes of some animals we can determine which living species are most closely related to each other. This also reveals which species most recently diverged from their common ancestor.
Based on the partial gene segments shown, which pair of animals are genetically most closely related and therefore most recently diverged from their common ancestor?
Chimpanzee and Mouse
Rat and Mouse
Rat and Chimpanzee
Which rock layer contains the newest fossils?
have the ability to interbreed.
Images of the embryo and adult stages of three different organisms are shown.
Which of the following is the best conclusion that can be drawn from this evidence?
Having similar embryos indicates that these organisms eat the same types of food.
Having similar embryos indicates that these organisms live in a similar environment.
Having similar embryos indicates that these organisms share a recent common ancestor.
Having similar embryos indicates that a certain protein controls how many legs the adult organisms will have.
Please select all correct answers that apply, based on the cladogram shown
Sharks and Primates do not have a common ancestor.
Crocodiles and Amphibians are more closely related than Birds and Sharks.
Rodents and Rabbits do have Eggs with Shells.
Sharks have more of the traits shown than of all of the other organisms.
Birds have all of the shown traits that Sharks have, but Sharks do not have all of the shown traits that Birds have.
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
In the table shown, the DNA found in five primate species was compared to the DNA found in humans. The number of sequence differences was recorded. Based on the data in this table, what inference could you make about these species compared to humans?
Lemurs are most like humans.
Gorillas are most like humans.
None of the species are similar to humans.
Only the lemur differs from humans in any way.
Various species show similar developmental patterns as embryos.
DNA similarities
Anatomical Homology
Embryology
All of the above
Select ALL the parts of Natural Selection.
overproduction
evolution
variation
selection
competition
What happens to new traits that HELP organisms survive over time?
They become MORE COMMON
They become LESS COMMON
They are EQUALLY COMMON
Does the presence of homologous structures in genetically different animals suggest common ancestry?
Yes
No
What is is the study of how and why plants and animals live where they do?
Evolution
Adaptive Radiation
Biogeography
Biogeology
Natural Selection is driven by a change in the environment and survival of the
Smartest
Fastest
Most well adapted
Biggest
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