Evolution 22-23

Which statement best describes the process of evolution?

• Populations can survive in different locations on earth

• Environmental conditions limit the number of species on Earth

• Populations grow when resources are abundant

• The traits of a species can change over time

Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce. His theory is known as

• evolution

• speciation

• adaptation

• natural selection

A change in a trait or characteristic that increases an organism’s ability to survive and reproduce.

• extinction
• natural selection
• adaptation
• choice

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

What is this an example of?

• Homologous structure

• Analogous structure

• Vestigial organs

• Functional adaption

Which of the pictures above would be examples of homologous structures?

• 1 & 2

• 1 & 3

• 2 & 3

The earliest stages of development in a chicken and fish have gill slits and a tail.

• fossil evidence

• analogous structures

• molecular evidence

• comparing embryo structure

The leg bones of a whale are present, even though they are no longer in use.

• homologous structures

• vestigial structures

• comparing cell structures

• comparing biochemistry

According to this data, the unknown bacterial species is most closely related to: 

• Species I
• Species II
• Species III
• Species IV

What is the process of which humans breed organisms for certain traits?

• artificial selection
• descent without modification
• inheritance of acquired characteristics
• natural selection