Evolution of Populations QUIZ

 Populations change naturally over time. Which mechanism is a method of artifical selection rather than natural selection?

• genetic drift
• natural selection
• selective breeding
• geographic isolation

 What did Charles Darwin mean when he stated that some organisms were 'more fit' than other organisms?

• some organisms were heavier and stronger
• some organisms were more likely to reproduce
• not all organisms had the same natural life span
• not all organisms were equally suited to gathering food

A population is...

• A group of one species in one area
• Multiple species that live in one area
• All of the living and nonliving things in an area
• None of these

Which example shows disruptive selection?

• Giraffe necks have become longer over time.

• Medium-sized beaks in hummingbirds have decreased in frequency over time.

• The peppered moth became less common in polluted environments.

• Human babies with a very high or a very low birth mass have a higher mortality rate.

Fossil records show that black bears increased in size during the Ice Age and decreased in size with warmer temperatures. What type of selection do these changes in size represent?

• Allopatric

• Directional

• Disruptive

• Stabilizing

Which of the following defines a gene pool?

• The sum of alleles in an individual of a given species

• An organism's complete set of DNA, including all of its genes.

• The degree of variation in alleles present in an interbreeding population

• The total collection of different alleles in an interbreeding population

An example of behavioural isolation

• Toads that mate at different times of the year

• Plants that have separate pollination times

• Birds that have specific songs

• Turtles that are separated by a mountain

Babies birth weight is an example of

• Disruptive selection

• Adaptive radiation

• Stabilizing selection

• Directional selection

When members of a species breed, their offspring are able to produce offspring.

• True

• False

What is an inherited characteristic that helps organisms survive?

• Evolution

• Adaptation

• Natural Selection

• Extinction