Copy of Monday (11/10) - Gene Expression Practice + Investigation (5/2/2026) - Nancy Morfin | Bibliotek

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Many organisms are light in color during the winter and turn darker shades of black or brown during the summer time as shown below.

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Each of these organisms contain a gene that when transcribed and translated produces a dark pigment (color). Using this information, complete the sentences below:

Genes are expressed through the process of . When temperatures cool down, this pigment gene is deactivated (turned off) and .

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The ability to sweat is a trait coded for in the human DNA sequence. Observe the diagram below and complete the sentences that follow.

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When body temperature rises (increases), the gene for making sweat molecules body temperature back to a normal temperature range.

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The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:
Which of the following is TRUE?

Humans have the genetic code for sweating, but this gene is only expressed at certain times.

Organisms such as cats and dogs can activate the gene for producing sweat molecules.

Humans have the genetic code for sweating and this gene is expressed at all times.

Organisms such as cats and dogs sweat in order to lower their body temperatures.

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which genes in a cell's DNA are .

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What factors influence gene expression?

External factors

Internal factors

Time factors

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Select all of the factors that influence gene expression in organisms.

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Why is gene expression in an organism important?

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In hares when temperatures rise (increase) in the spring and it begins to get muddy they brown pigment RNA, which means they will

The herbicide deactivated the genes of the grass that produced essential amino acids, causing the plant to die.

The herbicide activated the genes of the grass that produced essential amino acids, causing the plant to thrive and grow larger.

The herbicide deactivated the genes of the grass that produced essential amino acids, causing the plant to thrive and grow larger.

The herbicide activated the genes of the grass that produced essential amino acids, causing the plant to die.

Drosophila melanogaster, more commonly known as the fruit fly, are used in research settings to understand connections in the brain and social behavior.

Fruit flies are amazing research model organisms because they reproduce quickly, do not take up much space, and have been used to understand how cells in the body communicate with each other similar to the way human cells communicate.

Another field of research with fruit flies relies on comparing genes expressed and the impact on behavior. For example, we will investigate how temperature can impact hormonal balance in Drosophila melanogaster.

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Why is Drosophila melanogaster considered a model organism to study?

They are expensive to maintain.

They can reproduce quickly.

They are small in size.

Their cells communicate similar to human cells.

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Question 14

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For our investigation, we will focus on the impacts of behavior on the male. This is because the male behavior in courtship follows a distinct pattern including following the female while flapping their wings.

Similar to humans, fruit flies have hormones that aid in their development for reproductive maturity. When a human male reaches puberty, the hormone testosterone is produced which contributes to changes in voice, increased facial and body hair, and the production of sperm cells. Fruit flies do not have testosterone, however they do have a juvenile hormone that contributes to reproductive maturity. Observe the table below and answer the questions:

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Why will our investigation focus on male fruit flies?

Female fruit flies show more courtship behaviors than males.

Their courtship behavior follows a pattern that can be observed.

Their courtship behavior is unpredictable and random.

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Observe the data table below and complete the sentences:

For Fly A, temperature is . Fly A and amount of juvenile hormone produced is .

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Which of the following statements about the data table are true? Select all that apply.

Fly A is mature (0% juvenile hormones)

Fly B is mature (80% juvenile hormones)

At low temperatures, juvenile hormones are not produced

At high temperatures, juvenile hormones are not produced

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Based on the table of information you have analyzed below, complete the following sentence:

The environmental factor that differs between Fly A and Fly B is would be more successful in reproducing because

Copy of Monday (11/10) - Gene Expression Practice + Investigation (5/2/2026)

Copy of Monday (11/10) - Gene Expression Practice + Investigation (5/2/2026)

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:
Which of the following is TRUE?

What factors influence gene expression?

Select all of the factors that influence gene expression in organisms.

Why is gene expression in an organism important?

Why is Drosophila melanogaster considered a model organism to study?

For fruit flies, courtship is a process where the male attempts to impress a female mate in order to reproduce.
How does the male behave in this video in order to impress the female for mating?

Why will our investigation focus on male fruit flies?

Which of the following statements about the data table are true? Select all that apply.

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:
Which of the following is TRUE?

What factors influence gene expression?

Select all of the factors that influence gene expression in organisms.

Why is gene expression in an organism important?

Why is Drosophila melanogaster considered a model organism to study?

What will we be the contributing factor for this investigation?

For fruit flies, courtship is a process where the male attempts to impress a female mate in order to reproduce.
How does the male behave in this video in order to impress the female for mating?

Why will our investigation focus on male fruit flies?

Observe the data table. Select TWO trends you notice from the information given:

Which of the following statements about the data table are true? Select all that apply.

What will we be the contributing factor for this investigation?

Observe the data table. Select TWO trends you notice from the information given:

Copy of Monday (11/10) - Gene Expression Practice + Investigation (5/2/2026)

Copy of Monday (11/10) - Gene Expression Practice + Investigation (5/2/2026)

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:Which of the following is TRUE?

What factors influence gene expression?

Select all of the factors that influence gene expression in organisms.

Why is gene expression in an organism important?

Why is Drosophila melanogaster considered a model organism to study?

Why will our investigation focus on male fruit flies?

Which of the following statements about the data table are true? Select all that apply.

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:Which of the following is TRUE?

What factors influence gene expression?

Select all of the factors that influence gene expression in organisms.

Why is gene expression in an organism important?

Why is Drosophila melanogaster considered a model organism to study?

What will we be the contributing factor for this investigation?

Why will our investigation focus on male fruit flies?

Observe the data table. Select TWO trends you notice from the information given:

Which of the following statements about the data table are true? Select all that apply.

What will we be the contributing factor for this investigation?

Observe the data table. Select TWO trends you notice from the information given:

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:
Which of the following is TRUE?

The ability to sweat is a trait coded for in the human DNA sequence. Other organisms (such as cats and dogs) do not have the ability to sweat. Below is a diagram showing how the human body responds to temperature changes:
Which of the following is TRUE?