Pre AP Biology Natural Selection and Hardy Weinberg

Multiple Choice

Which of the following best describes microevolution?

• Evolutionary changes that affect a single population

• Evolutionary changes that occur across multiple species

• Evolutionary changes that happen over millions of years

• Evolutionary changes that do not affect descendants

Multiple Choice

Which scientist believed that organisms were perfectly formed and adapted to the world, remaining fixed and unchanging?

• Aristotle

• Charles Lyell

• Jean Baptiste Lamarck

• Charles Darwin

Multiple Select

Which of the following concepts were proposed by Georges Cuvier and James Hutton?

• Catastrophism

• Gradualism

• Uniformitarianism

• Natural Selection

Multiple Choice

What observation did Darwin make about finches and tortoises on the Galapagos Islands?

• They had specific characteristics for each island.

• They were all identical across islands.

• They did not adapt to their environments.

• They were only found on one island.

Open Ended

Explain how Jean Baptiste Lamarck's ideas about evolution differ from those of Charles Darwin.

Multiple Choice

Which of the following best describes the process of natural selection as explained in the slides?

• Organisms change their traits to survive

• Some organisms survive and reproduce better due to heritable traits

• All organisms survive equally

• Traits are acquired during an organism's lifetime

Multiple Select

Which of the following are sources of variation in a population?

• Random mutations

• Genetic recombination during meiosis

• Migration (gene flow)

• Natural selection

Multiple Choice

What is the ultimate source of variation in the physical traits of organisms?

• Genetic recombination

• Migration

• Random mutations

• Environmental changes

Open Ended

Describe how descent with modification leads to populations with new phenotypes adapted to new situations.

Multiple Choice

Which mode of natural selection increases the expression of an extreme version of a trait in a population?

• Directional Selection

• Disruptive Selection

• Stabilizing Selection

• Random Selection

Multiple Choice

Which of the following statements about allele frequencies is correct?

• Allele frequency refers to how common an allele is in a population.

• Allele frequency only applies to dominant alleles.

• Allele frequency is unrelated to the gene pool.

• Allele frequency cannot be calculated.

Multiple Choice

Based on the wildflower population example, what is the total number of alleles for flower color in a population of 500 plants?

• 1000

• 500

• 800

• 200

Multiple Choice

What is the frequency of the dominant “A” allele in the given population?

• 0.2

• 0.5

• 0.8

• 1.0

Multiple Select

Which of the following are mechanisms of microevolution?

• Genetic Drift

• Gene Flow

• Natural Selection

• Random Mutation

Open Ended

Explain how genetic drift can affect allele frequencies in a small population over time.

Open Ended

Describe how sexual selection can influence the traits present in a population, even if those traits do not increase survival fitness.

Multiple Select

According to the Hardy-Weinberg principle, which of the following conditions must be met for genetic equilibrium to occur in a population?

• No migration

• Small population size

• Random mating

• No natural selection

Match

Match the following parts of the Hardy-Weinberg Equation

homozygous dominant organisms--BB, FF

homozygous recessive organisms--bb, ff

heterozygous organisms

Bb, Ff

• homozygous dominant organisms--BB, FF

• homozygous recessive organisms--bb, ff

• heterozygous organisms

  Bb, Ff

Match

Match the following

• p²

• 2pq

• q²

• p

• q

frequency - homozygous dominant genotype

frequency - heterozygous genotype

frequency- homozygous recessive genotype

frequency of dominant allele

frequency of recessive allele

• frequency - homozygous dominant genotype

• frequency - heterozygous genotype

• frequency- homozygous recessive genotype

• frequency of dominant allele

• frequency of recessive allele

Math Response

Keep 2 decimals for your answers!

Let's assume that in a population of newts, producing toxin is a recessive trait, while not producing toxin is dominant.

In this population of newts, 387 (of the 587 total newts) do not produce toxin. What is the frequency of the dominant allele in the population?

Type answer here

Correct Answer: 0.42

Deg^°

Rad

Drag and Drop

The Hardy-Weinberg principle states that ​

Placeholder

of alleles in a population do not change unless ​

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forces act on population.

Drag these tiles and drop them in the correct blank above

frequencies

evolutionary

Dropdown

Using the Hardy-Weinberg Principle, explain what each of the variables below represents if p = 0.8:

Hardy Weinberg Principle: p + q = 1 and p2 + 2pq + q2 = 1.

p= 0.8

q= ​

Select answer

p2 = ​

Select answer

2pq = ​

Select answer

q2 = ​

Select answer

Multiple Choice

The table provides data about the frequency of the trait in the population over serveral generations in a stable habitat without selectivesm pressures. Which of the following trait described by the data in the table demonstrates the Hardy -Weinburger principles?

• Trait A

• Trait B

• Trait C

• Trait D

Multiple Choice

Which one is NOT one of Hardy-Weinberg's Equilibrium Assumptions?

• No mutation

• Random mating

• Loving other frogs

• No overpopulation

Multiple Choice

A scientist studies a population of lizards to determine whether or not the population is evolving.

Select the correct word or phrase to place into the blank boxes to describe what occurs in when Hardy-Weinberg condition are met.

• "for an individual" in the first box and "change" in the second box.

• "in a population" in the first box and "change" in the second box.

• "for an individual" in the first box and "remain constant" in the second box.

• "in a population" in the first box and "remain constant" in the second box.

Multiple Choice

The Hardy-Weinberg Model is...

• available at local hobby stores and retailers throughout the Greater Tazewell area.
• a mathematical tool that biologists can use to predict allele frequencies and determine whether or not evolution is occurring within a population.
• always occurring within individual organisms in nature.
• only useful in the lab and cannot be practically applied to real-world populations of organisms.  

Multiple Choice

If all 5 Hardy-Weinberg assumptions are true, a population is said to be in genetic equilibrium. This means

• it is evolving

• it is not evolving

Multiple Choice

If a recessive disorder is found to affect 1 in 500 live births, what is the frequency of the dominant allele?

• 0.002

• 0.9553

• 0.0447

• 0.9125

Multiple Choice

Determine the expected numbers of organisms with genotype BB if the frequencies are as follows in a population with a total size of 150: f(BB)=0.16, f(Bb)=0.48, and f(bb)=0.36. 

• 24
• 72
• 54
• 150

Open Ended

How would you explain the difference between microevolution and macroevolution in your own words?

Hotspot

Which moth is better adapted to an environment with light trees?

Dropdown

Look at the Image below. Which grasshoppers are going die faster in a green field?

Select answer

Drag and Drop

The differences between the wings of these moths, which are all the same species, is an example of

Placeholder

Drag these tiles and drop them in the correct blank above

Natural Selection

Variation

Homeostasis

Extinction

Dropdown

In this example, the variation is the ​

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and the adaptation is the ​

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. This is because of the selecting agent, ​ the

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. Therefore, the ​ tan mice will be ​

Select answer

. On the other hand, the black mice will be ​

Select answer