Bio 181 Final Exam Test Bank Newest

1 Bio 181 Final Exam Test Bank Newest 2025/2026 Complete 400 All Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!

A species of Brown Lemur was divided by a river thousands of years ago. Now, one of the two populations breads in May/June; the other breeds in July/August. In 2001 experts declared these two groups were now two separate species. ALL of the following terms apply to this scenario EXCEPT...

Select one:

• temporal isolation
• ecological isolation
• prezygotic barrier
• sympatric speciation
• allopatric speciation - ANSWER-D

We are currently experiencing the Holocene Extinction Event. If you had a time machine and could travel forward in time 1 million years, what changes would you expect to see in life forms on land? 1 / 4

2

Select one:

• life forms that are the same as every current species
• new life forms that are descended from almost every current species
• new life forms that are descended from just a few current species
• life forms that are the same as a few current species
• new life forms that evolved from single cells - ANSWER-C

Maasai people in Tanzania have lactase-persistence. The Chagga people of Tanzania are NOT lactase-persistent. Fula people in Nigeria have lactase-persistence.Which groups are probably most closely related?

Select one:

• Chagga and Fula
• Maasai and Chagga
• All are equally related
• Maasai and Fula - ANSWER-B

Which organism would be MOST likely to fossilize?

Select one:

• Colossal squid (Mesonychoteuthis hamiltoni) 2 / 4

3

• Giant catfish (Pangasianodon gigas)
• Savanna elephant (Loxodonta africana)
• Giant earthworm (Microchaetus rappi) - ANSWER-B

How could you BEST determine the age of a fossil in years?

Select one:

• Radiometric dating using uranium
• Radiometric dating using Carbon-14
• Relative dating compared to other fossils
• Combine the age of the layer in which the fossil was found and

deductive reasoning

• all of the above approaches are equally useful in determining the age

of a fossil - ANSWER-A

Turtles and birds both have toothless beaks. Turtles don't need teeth because they usually eat food whole; birds lost their heavy teeth as an adaptation for flight and also usually eat food whole. This trait (toothless beaks) is _______, the product of _______ evolution.

Select one:

a. analogous : divergent

b. homologous : convergent 3 / 4

4

c. homologous : divergent

d. analogous : convergent - ANSWER-D

Populations of humans who live at high altitudes all have adaptations to allow them to live in low oxygen environments. What type of trait are these adaptions?

Select one:

• analogous
• heterologous
• homologous
• autologous - ANSWER-A

Ardipithecus had which of the following traits.

Select one:

• hip structure that indicated walking (only)
• food structure that indicated walking (only)
• both hip and foot structures that indicated walking
• neither hip and foot structures that indicated walking - ANSWER-A

Which hominin species was the first to extend its range beyond Africa?

• / 4