6 Evolution Q1

The scientific theory of evolution is supported by different types of evidence. The diagrams below show the skeletons of two different animal species. How does comparing the skeletons of these animals provide support for the scientific theory of evolution?

•  It provides information about the organisms' habitats.
•  It shows possible common ancestry between organisms.
• It provides information to determine the organisms' ages.
• It shows possible chromosomal similarities between organisms.

The diagram illustrates an embryonic stage of two organisms.Which of the following can be determined by observing the embryos shown in the diagram? 

• The organisms share a common ancestry.
• The organisms belong to the same genus.
• The organisms are native to the same geographic areas.
• The organisms will grow into anatomically similar adults.

Scientists have found evidence that about 2.4 million years ago a gene regulating jaw muscles mutated and may have led to the more graceful human jaw we see today. The diagram below shows the skulls of 3 hominid species.Which statement below most closely explains the link between jaw size and hominid evolution? 

• The jaws of hominids evolved to be smaller and less protruding over time. 

• There appears to be no change in the jaws of hominids over time.

• The jaws of hominids changed over time due to a change in brain size. 

Scientists are studying the evolutionary history of a group of plants in the United States, and they developed an evolutionary tree, as shown below.Which statement can be inferred from the evolutionary tree?

• Species 1 is most closely related to Species 8.
• Species 2 is most closely related to Species 3.
• Species 3 is most closely related to Species 7.
• Species 5 is most closely related to Species 6.

Finches on the Galapagos Islands had different beaks in order to help them do what?

• Build nests
• Fight off predators
• Collect food sources
• Compete with rivals

Farmers breed cows to produce high amounts of milk. This is an example of...

• Natural Selection

• Variations in a species

• Artificial Selection

• inbreeding

This scientist came up with the idea of natural selection.

• Jean Baptiste Lamarck
• Gregor Mendel
• Charles Darwin
• Thomas Malthus

• Stabilizing Selection

• Disruptive Selection

• Directional Selection

• Divergent Selection

• Stabilizing Selection

• Disruptive Selection

• Directional Selection

• Divergent Selection

• Stabilizing Selection

• Disruptive Selection

• Directional Selection

• Divergent Selection