Understanding Evolution: Evidence and Concepts

What was the initial reaction to Darwin's theory of evolution?

• It was celebrated as a groundbreaking discovery.

• It was immediately accepted by everyone.

• It was met with criticism initially.

• It was ignored by the scientific community.

How does relative dating determine the age of fossils?

• By using DNA sequencing.

• By analyzing the chemical composition of fossils.

• By comparing the depth of fossils in sediment layers.

• By measuring the decay of radioactive isotopes.

What is the main limitation of relative dating?

• It requires advanced technology.

• It can only be used for fossils older than 10,000 years.

• It is less precise than absolute dating.

• It is very expensive.

What do homologous structures indicate about species?

• They have a recent common ancestor.

• They are not related at all.

• They evolved in similar environments.

• They have no evolutionary relationship.

Which of the following is an example of an analogous structure?

• Butterfly wing and bat wing

• Human arm and whale fin

• Human arm and bat wing

• Whale fin and cat leg

What do vestigial structures suggest about an organism's evolutionary history?

• They are newly evolved structures.

• They are remnants of structures that were functional in ancestors.

• They indicate a recent common ancestor.

• They have no evolutionary significance.

What does a high percentage of shared genes between two species suggest?

• They evolved in similar environments.

• They have a recent common ancestor.

• They are not related at all.

• They have a distant common ancestor.

Which molecule is commonly analyzed to determine evolutionary relationships?

• Starch

• Glucose

• Chlorophyll

• Hemoglobin

What does embryological evidence suggest about species with similar early development stages?

• They are not related at all.

• They evolved in similar environments.

• They share a recent common ancestor.

• They have no evolutionary relationship.

Which species are humans more closely related to based on embryological evidence?

• Fish

• Tortoises

• Rabbits

• Salamanders