Genetic Drift and Allele Frequencies

What materials are needed for the genetic drift activity described in the video?

• M&Ms, dice, circles, and coloring tools

• Stickers, a ruler, and a notebook

• Playing cards, dice, and a board

• Coins, paper, and a calculator

In the first generation simulation, what does the dice roll represent?

• The color of the alleles

• The randomness of genetic drift

• The speed of allele mutation

• The size of the population

During the second generation, which alleles were lost due to chance?

• Green and brown

• Yellow and green

• Orange and brown

• Blue and red

What happens when an allele becomes fixed in a population?

• It increases the population size

• It mutates into a new allele

• It disappears from the population

• It becomes the only allele present

Why are small populations more affected by genetic drift?

• They have fewer alleles to buffer changes

• They have more mutations

• They have a higher rate of natural selection

• They have more immigration

Which factor can increase variation in a gene pool?

• Genetic drift

• Mutations

• Emigration

• Natural selection

How does immigration affect allele frequencies in a population?

• It decreases allele frequencies

• It introduces new alleles

• It fixes alleles in the population

• It removes alleles from the population

What is the effect of natural selection on genetic variation?

• It increases genetic variation

• It has no effect on genetic variation

• It decreases genetic variation

• It randomizes genetic variation

Which of the following is NOT a factor that decreases genetic variation?

• Genetic drift

• Mutations

• Natural selection

• Emigration

What role does non-random mating play in genetic variation?

• It decreases genetic variation

• It has no effect on genetic variation

• It increases genetic variation

• It fixes alleles in the population