Selective Pressure

High temperature, drought

Alta temperatura, sequía

• adaptation

• variation

• selective pressure

• evolution

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-4

NGSS.HS-LS4-5

What is selective pressure in the context of natural selection?

• A force that causes a particular trait to become more common in a population

• A random change in the genetic makeup of a population

• A process that leads to the extinction of a species

• A method used by scientists to measure genetic variation

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Which of the following is an example of selective pressure?

• A drought that causes only drought-resistant plants to survive

• A mutation that occurs randomly in a population

• A volcanic eruption that destroys a habitat

• A scientist artificially selecting traits in a laboratory

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

How does selective pressure affect allele frequencies in a population?

• It increases the frequency of beneficial alleles

• It decreases the frequency of all alleles

• It has no effect on allele frequencies

• It randomly changes allele frequencies

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

In an experiment, a population of bacteria is exposed to an antibiotic. What role does the antibiotic play in this scenario?

• Selective pressure

• Genetic drift

• Gene flow

• Mutation

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Which of the following best describes the relationship between selective pressure and adaptation?

• Selective pressure drives adaptation by favoring advantageous traits

• Adaptation occurs randomly without any influence from selective pressure

• Selective pressure and adaptation are unrelated concepts

• Adaptation causes selective pressure to decrease

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-3

NGSS.HS-LS4-4

What is the likely outcome for a population that cannot adapt to a new selective pressure?

• The population may decline or become extinct

• The population will thrive and increase in number

• The population will remain unchanged

• The population will develop new mutations immediately

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Which of the following scenarios illustrates selective pressure in action?

• A population of moths becomes darker due to industrial pollution

• A species of fish migrates to a new habitat

• A bird learns to sing a new song

• A plant grows taller due to increased sunlight

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

How can selective pressure lead to speciation?

• By causing populations to adapt to different environments

• By increasing genetic drift

• By reducing genetic variation

• By causing random mutations

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

What role does selective pressure play in the process of evolution?

• It acts as a driving force for evolutionary change

• It prevents evolution from occurring

• It has no role in evolution

• It reverses evolutionary changes

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-3

NGSS.HS-LS4-4