5.2.2 Natural Selection

• Over time, natural selection leads to populations becoming better adapted to their environment.


  True
• The principles of natural selection explain how populations change over time
• What is an example of genetic differences in humans?

  Different blood types
• What happens to beak size in birds over time due to natural selection?

  Adapts to local seeds
• What is the definition of natural selection?

  Beneficial traits lead to survival
• What example is used to illustrate natural selection in birds?

  Beak size and seed type
• What example is used to illustrate adaptation in insects?

  Darker coloration and survival
• Mutations can lead to antibiotic resistance in bacteria.

  True
• Order the principles of natural selection based on their logical sequence.

  1️⃣ Variation

  2️⃣ Inheritance

  3️⃣ Differential Survival and Reproduction

  4️⃣ Adaptation
• Without inheritance, natural selection could not drive long-term changes in a population
• What is environmental pressure defined as?

  Factors influencing survival and reproduction
• Adaptation occurs through the natural selection of beneficial traits.


  True
• The principles of natural selection explain how populations change over time due to beneficial traits
• Mutations are a source of variation in DNA that can lead to new traits
• Match the concept with its explanation:

  Inheritance ↔️ Transmission of traits from parents to offspring

  Genes ↔️ DNA segments coding for traits
• Natural selection can lead to changes in the genetic makeup of a population over time.


  True
• Some traits can be passed down from parents to offspring
• Order the key steps of natural selection.

  1️⃣ Variation in a population

  2️⃣ Inheritance of traits

  3️⃣ Differential survival and reproduction

  4️⃣ Adaptation over time
• Match the source of variation with its description.

  Genetic Differences ↔️ Variations in DNA sequences

  Mutations ↔️ New traits from changes in DNA

  Environmental Influences ↔️ Traits altered by external factors
• Natural selection is the process where organisms with advantageous traits survive and reproduce
• Inheritance is necessary for natural selection to cause long-term changes in a population.


  True
• What is the definition of environmental pressure?

  Factors influencing survival
• Adaptation is the process by which a population becomes better suited to its environment
• Match the concept with its description:

  Environmental Pressure ↔️ Factors influencing survival and reproduction

  Adaptation ↔️ Becoming better suited to the environment over time
• Variation within a population is essential for natural selection to occur.


  True
• Why is variation crucial for natural selection?

  Provides raw material for adaptation
• Inheritance allows beneficial traits to be maintained across generations.


  True
• What creates a selective environment in organisms?

  Environmental pressure
• What is an example of environmental influence on plant traits?

  Sunlight affecting plant height
• Adaptation is the process by which a population becomes better suited to its environment over generations.


  True
• What does environmental pressure create in an environment?

  Selective environment
• What is the core principle of natural selection?

  Survival and reproduction of organisms with advantageous traits
• Arrange the principles of natural selection in a logical order:

  1️⃣ Variation

  2️⃣ Inheritance

  3️⃣ Differential Survival and Reproduction

  4️⃣ Adaptation
• What is the role of genes in inheritance?

  Code for traits
• Natural selection occurs when organisms with beneficial traits are more likely to survive and reproduce