Evolution Practice

Which of the following is a fossil?

• a plant that has recently died
• a group of organisms that can reproduce
• a structure or organ that no longer functions
• a trace of an organisms that existed in the past

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

An earthquake causes an ocean channel top open and separate an island into two.  the species on each section are now in

• geographic isoliation
• behavioral isolation
• disruptive selection
• temporal isolation

the hind leg bones in a whale are examples of

• homologous structures
• analogous structures
• fossils
• vestigals

Individuals that are well adapted to their environment will survive and produce:

• Fewer mutations
• Stronger genes
• More offspring
• More trisonomies

I have the bones of a large and small mammal that lived in different places and ate different food. However, there's a lot of anatomical similarities between the two. What is a reasonable conclusion?

• They share a common ancestor
• They occupied the same niche
• They both walked on four legs
• They had the same vestigial organs

Which of the following is NOT an example of natural selection? 

• People selectively breeding hamsters.
• Insect populations developing resistance to certain pesticides.
• Bacteria becoming resistant to antibiotics.
• Male birds of certain species developing colorful feathers to attract female mates.

Dolphins have the same arm structure as wolfs, what type of evidence for evolution does this represent?

• DNA
• vestigial structures
• homologous structures
• embryology

The law of superposition states

• the oldest rock layer is on the top, the younger rock layer is on the bottom
• rock layers are always in sequence from oldest to youngest
• the youngest rock layer is on the bottom and the oldest is on the top
• the oldest layer is on the bottom and the youngest is on the top when it is undisturbed