Based on the diagram in the slide 'The Nature of Natural Selection', what happens after constant random mutations in a population of bacteria?

Selection for a trait and reproduction

Based on the diagram, what is the role of constant random mutations in a population of bacteria?

They introduce variation in traits

They ensure all bacteria are identical

According to the diagram, selection for a trait (& reproduction) leads to:

A) A decrease in population size

D) Random elimination of traits

Which of the following statements is true about the phrase 'survival of the fittest'?

It is an oversimplification and can be misleading.

It is an accurate and complete description of natural selection.

It only refers to physical strength.

It means the same as Darwinian fitness.

What does natural selection act at the level of?

Phenotype (genotype x phenotype interaction)

According to the definition provided, what does the norm of reaction curve represent?

The phenotype expressed by a given genotype as a function of environmental conditions

The number of species in an environment

The genetic variation in a population

The average temperature of an environment

Which of the following statements is true?

Genotypes do not code for a fixed number of leaves

Genotypes do not code for fixed leaf area

Genotypes code for a number and area of leaves that depends on the intensity of light to which the plant is exposed

What is a confounding factor mentioned in the example that may affect the survival of mice?

Mice may have different behaviors that reflect survival.

The color of the cage the mice are kept in.

The type of bedding used in the experiment.

The time of day the experiment is conducted.

What is the definition of adaptation according to the passage?

B) An inherited trait that makes an organism more fit in its abiotic (nonliving) and biotic (living) environment and has arisen as a result of the direct action of natural selection for its contemporary function.

A) A trait that currently serves one function today, but evolved from a trait that served a different function in the past.

C) A random change in an organism's DNA.

D) A behavior learned during an organism's lifetime.

A trait that currently serves one function today, but that evolved from a trait that served a different function in the past.

An inherited trait that makes an organism more fit in its environment.

Fill in the blank: The accordion-like structure of a cactus allows the plant to _________

expand and contract with water availability.

grow taller rapidly during the night.

move towards sunlight like a sunflower.

Which experiment is associated with predation and natural selection in guppies?

Predation and Natural Selection in Guppies

E. coli: Long-Term Evolution Experiment (LTEE)

Natural Selection on Lizards in Urban Heat Islands

Which topic involves natural selection on lizards in urban heat islands?

Natural Selection on Lizards in Urban Heat Islands

Predation and Natural Selection in Guppies

E. coli: Long-Term Evolution Experiment (LTEE)

According to the diagram, what is the first step in Lenski's experimental evolution system?

Take a single bacterial clone and create 12 genetically identical lines

Carry out daily protocol for 15,500+ days

Refer to Figure 3.16. What does the graph in panel A show about the average cell volume in one E. coli line over 10,000 generations?

It increases and then levels off

What does a relative fitness value greater than one indicate in panel B?

A relative fitness value greater than one indicates higher fitness than the ancestor.

A relative fitness value greater than one indicates lower fitness than the ancestor.

A relative fitness value greater than one indicates no change in fitness compared to the ancestor.

A relative fitness value greater than one indicates the same fitness as the ancestor.

What does the graph in panel A show about cell volume in 12 E. coli lines over 10,000 generations?

All lines show an increase in cell volume

All lines show a decrease in cell volume

Cell volume remains constant in all lines

Cell volume fluctuates randomly in all lines

What does the graph in panel B show about relative fitness in 12 E. coli lines over 10,000 generations?

Relative fitness increases in all 12 E. coli lines over 10,000 generations.

Relative fitness decreases in all 12 E. coli lines over 10,000 generations.

Relative fitness remains constant in all 12 E. coli lines over 10,000 generations.

Relative fitness fluctuates randomly in all 12 E. coli lines over 10,000 generations.

Organic Evolution Test #1 B

Authored by Scot Ahlers

Biology

University

NGSS covered

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99 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fill in the blank: According to the principles of evolution by natural selection, there is ______ among individuals ("virtually universal" within populations).

variation

uniformity

stability

identity

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

NGSS.HS-LS4-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fill in the blank: The variation among individuals is ______.

inherited

temporary

artificial

irrelevant

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fill in the blank: Some variants ______ and reproduce at higher rates than others.

survive

sleep

shrink

hesitate

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fill in the blank: The consequence of natural selection is ______ (change in frequency of an inherited trait within a population).

evolution

mutation

photosynthesis

respiration

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the slide 'The Nature of Natural Selection', what is the ultimate source of variation on which natural selection (NS) acts?

Migration

Mutation

Adaptation

Selection

Tags

NGSS.HS-LS4-2

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the slide 'The Nature of Natural Selection', NS and Mutation are (generally) ________ processes.

separate

identical

continuous

dependent

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the slide 'The Nature of Natural Selection', mutations are random with respect to the needs of the organism.

True

False

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Organic Evolution Test #1 B

Fill in the blank: According to the principles of evolution by natural selection, there is ______ among individuals ("virtually universal" within populations).

Fill in the blank: The variation among individuals is ______.

Fill in the blank: Some variants ______ and reproduce at higher rates than others.

Fill in the blank: The consequence of natural selection is ______ (change in frequency of an inherited trait within a population).

According to the slide 'The Nature of Natural Selection', what is the ultimate source of variation on which natural selection (NS) acts?

According to the slide 'The Nature of Natural Selection', NS and Mutation are (generally) ________ processes.

According to the slide 'The Nature of Natural Selection', mutations are random with respect to the needs of the organism.

Based on the diagram in the slide 'The Nature of Natural Selection', what happens after constant random mutations in a population of bacteria?

According to the diagram and text, what does natural selection (NS) act on?

Fill in the blank: NS acts on individuals, but the consequences (evolution) occur in _________.

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