Evolution Unit Exam

Computers and software continue to change and improve over time. We can say that information technology is rapidly evolving. The biological ​ (a)   is a scientific theory that states that new species of life develop from a common ancestor over time. This is the result of a process called ​ (b)   .

The Theory shows the ​ (c)   of organisms from single cell to multicell complex organisms. The theory is based on findings from fossil records, skeletal structures of vertebrates, molecular similarities and differences between organisms, comparative embryology, and ​ (d)   .

• Theory of Evolution
• natural selection
• evolution
• evolution of bacteria
• Theory of change
• Guided selection

Like a photograph, ​ (a)   give scientists clues into the past. They can be rocks that have the imprint of living things that were on Earth ​ (b)   of years ago, or they can be the remains of the organism itself, such as ​ (c)   , which may have turned into rock. Most fossils are formed when a ​ (d)   dies and is ​ (e)   beneath mud or sand.

• fossils
• millions
• bones
• plant or animal
• buried
• footprints
• centuries
• creatures

Which of the following are evidence that supports evolution? (select all that apply)

• fossils

• similarities in early development

• similarities in body structure

• similarities in DNA

• hieroglyphs in the ancient Egyptian tombs

An anatomical feature that no longer seams to have a purpose in the current form of an organism, like pelvic bones in whales, is an example of what?

• Vestigial Structure

• Homologous Structure

• Homophones

• Support for another set of flippers

Structures with the same anatomical make up but different functions (homologous structures) is evidence that those structures came from

• a common ancestor because structures are coded from DNA

• different ancestors because structures come from our RNA

• the same ancestors because they are used in the same way

• an alien ancestor because the is the only explanation

Comparing DNA sequences shows___.

• How closely related organisms are

• Traits that can become available

• Evolution is not real

• That organisms have evolved from several different organisms.

If an organism has a vestigial structure, that structure likely once had a function in a(n)

• close relative
• early ancestor
• unrelated organism
• embryological stage

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection
• embryology
• speciation
• evolution

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

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

• People selectively breeding hamsters for size.

• Insect populations developing resistance to certain pesticides.

• Bacteria becoming resistant to antibiotics.

• Male birds of certain species inheriting colorful feathers that are more attractive to females.