Biology sem 2 review 2

I contain genetic material such as DNA.

• prokaryotes only

• eukaryotes only

• both prokaryotes and eukaryotes

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

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

What is human evolution?

• Short process of change by which primates became modern humans.

• Long process of change by which primates became modern humans.

The smallest unit of life in a living thing.

• kingdom
• cell
• organs
• phylum

Science is a continually ongoing process.

• True
• False

can a hypothesis be wrong?

• yes

• no

• IDK

________ structures are reduced in size or function.

• vestigial
• homologous
• cladistic
• phylogenic

Which of the following is a factor in natural selection?

• Individuals of species compete with one another to survive.
• All species are genetically diverse.
• Individuals better able to adapt to changes leave more offspring.
• All are correct 

What is another name for natural selection?

• survival of the smartest
• survival of the fastest
• survival of the biggest
• survival of the fittest

When humans select desirable traits to be passed down to offspring

• natural selection

• artificial selection