Instrukcije

You will be working on this is groups in class (don't start this until I talk to you about it, please!)

When you click submit the "correct" answers will appear under your answers. The short answers will be "graded" as wrong, but that's just because you didn't write exactly what I wrote word for word (which makes sense!). This isn't graded on correctness but rather whether you complete it. Use this as an opportunity to practice what you have learned thus far!

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There is a species of plant that is poisonous so deer don't generally eat it. How would Lamarck describe how this trait became so frequent?

The soil and environmental conditions in the area caused the plants to develop poison.

Because the plants were being eaten by the deer they started to develop the poison as a defense mechanism during their lifetime and passed this acquired characteristic to their offspring, making the trait more frequent over generations.

The plants that were poisonous had a better chance of surviving and reproducing because they were not eaten by deer, leading to the trait becoming more frequent over generations.

Random mutations in the plant's genes led to the development of the poison, and those with the mutation survived better, leading to the trait becoming more frequent over generations.

1

There is a species of plant that is poisonous so deer don't generally eat it. How would Darwin describe how this trait became so frequent?

The soil and environmental conditions in the area caused the plants to develop poison.

Because the plants were being eaten by the deer they started to develop the poison as a defense mechanism during their lifetime and passed this acquired characteristic to their offspring, making the trait more frequent over generations.

The plants that were poisonous influenced their surroundings, causing non-poisonous plants nearby to also become poisonous over time, making the trait more frequent.

Random mutations in the plant's genes led to the development of the poison, and those plants that were poisonous had a better chance of surviving and reproducing because they were not eaten by deer, leading to the trait becoming more frequent over generations.

1

Sort the following into either Lamarck or Darwin

Believed that evolution always leads to increased complexity over time
Believed in natural selection as the mechanism of evolution
Went to the Galapagos Islands and studied finches
Believed extinction is possible
Did not believe extinction occurs
Believed that an individual organism can acquire a new trait during their lifetime
Believed the theory of use and disuse
Believed new traits arise randomly when an organism is born
Wrote "On the Origin of Species"
Believed that traits acquired by an individual organism during their lifetime can be passed on to their offspring
Believed those with more favored traits survive and reproduce more

Lamarck
Darwin

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Match the following terms with their definitions.

Stavka koja se može prevući		Odgovarajuća stavka
Adaptations		an organism’s ability to survive and reproduce
Evolution		traits that are favorable in a specific environment (random and formed by mutations from generation to generation)
Fitness		when an organism has more offspring because of a favored genetic trait/allele, leading to an increase in that favored trait/allele
Natural selection		a change in allele/trait frequency over time

Part 1:

Here are a bunch of examples of mice in a snowy environment and how the trait of fur color might change in frequency over time (these are all different scenarios - one doesn’t lead into the other). You should discuss this scenario with your partner and determine what you think might happen over time in each environment/scenario.

Things to note -

if there aren’t hawks in a scenario, the mice have no predators
the area is snowy so the white mice blend in
being white/black is a genetic trait that can be passed on and you need a random mutation for a new trait to arise
Assume the mice won't be eaten to the point of extinction

Include the vocabulary from the beginning in your answers. FYI - my answers are 3-5 sentences long.

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What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

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What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this? (assume that the hawks can't eat all of the mice)

0

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

0

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

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What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

Part 2:

The following are examples of natural selection graphs. Identify the type of natural selection that is illustrated in the graph and make up a scenario that would fit that graph (you need to make sure you address the organism on the y-axis, the traits on the y-axis, environment, time, etc.) using vocabulary. FYI - My answers are about 7-8 sentences long.

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Natural Selection Practice Problems 2023 - 2024

Natural Selection Practice Problems 2023 - 2024

There is a species of plant that is poisonous so deer don't generally eat it. How would Lamarck describe how this trait became so frequent?

There is a species of plant that is poisonous so deer don't generally eat it. How would Darwin describe how this trait became so frequent?

Sort the following into either Lamarck or Darwin

Match the following terms with their definitions.

Part 1:

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this? (assume that the hawks can't eat all of the mice)

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

Part 2:

FYI: finches are a type of bird

There is a species of plant that is poisonous so deer don't generally eat it. How would Lamarck describe how this trait became so frequent?

There is a species of plant that is poisonous so deer don't generally eat it. How would Darwin describe how this trait became so frequent?

Sort the following into either Lamarck or Darwin

Match the following terms with their definitions.

Part 1:

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this? (assume that the hawks can't eat all of the mice)

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

What do you think will happen in this scenario (i.e. what will happen to the frequency of mouse fur color over 10 years - remember frequency and population size are not the same thing). Why do you think this?

Part 2:

FYI: finches are a type of bird