Exam 11: Evidence for Evolution

DNA is the genetic (hereditary)material found in all living things on planet Earth.The genetic code is the same for everything from bacteria to plants and humans; this is evidence that the great diversity of life evolved from a ________.

Dana finds a plant on the southeastern coast of North America and a very similar plant on the northwestern coast of Africa.Upon evaluating their DNA sequence similarity,she determines they had a common ancestor.How long ago should Dana predict that the common ancestor existed,and where should she expect to find fossil evidence of it or transitional forms? Support this prediction.

Consider the experimental design presented in the infographic below.What is the significance of growing the populations at 42.2ᵒC? The increased growth temperature serves as a method of

Whales and Indohyus share a more recent common ancestor than whales and fish.Which of the following is true?

Dogs have vestigial digits called dewclaws.Describe the most likely origin of these structures.

A species of cave beetle that lives in total darkness is blind but has remnants of what looks like eyes.These "eyes" are

Match each example to the type of evidence supporting evolution. -The human and chimpanzee insulin genes are 98 percent similar.

The human appendix is an example of a(n)________ structure.

The proteins and DNA of organisms that share a recent common ancestor are ________ the proteins and DNA of organisms that do not share a recent common ancestor.

One of the reasons scientists have had so much difficulty finding a cure for HIV/AIDS is that the HIV virus is quick to evolve resistance to the drugs used to treat it.What is the most likely mechanism for this type of evolution?

How closely related two DNA molecules,and the organisms from which they came,are is measured through

Explain how an intermediate fossil can provide evidence for the lineage of current species.

Pangaea is

A fossil is found in Africa and South America but nowhere else in the world.What does this tell us about this organism?

Which of the following embryos will look similar to human embryos for the longest?

Carpal tunnel syndrome happens when the median nerve in a person's hand is compressed or squeezed,causing pain in the fingers.When the condition is severe enough,a surgeon can correct it by cutting through the transverse carpal ligament that is putting pressure on the nerve; this cutting of the ligament does not adversely affect the person's ability to use his or her hand or fingers.What does this suggest about the trait of having a transverse carpal ligament? Briefly explain your answer.

Match each example to the type of evidence supporting evolution. -Indohyus (an extinct ancestor to the whale)has whalelike ears and slender legs tipped with hooves.

Continental drift is the ________ of Earth's landmasses through geologic time.

What is biological evolution?

Indohyus's thick bones made it easier for this animal to wade and dive in water to evade predators and find plants to eat on the river bottom.This is an example of a(n)________,a feature that gives an individual improved function in a competitive environment.