4.3 Genetic Diversity

• Genetic diversity allows a population to adapt to changes in the environment
• Gene flow enhances genetic diversity by mixing alleles
• Why are genetically uniform populations more prone to extinction?

  Inability to adapt
• Diverse populations can evolve resistance to new pathogens
• New variations in genetic diversity are introduced through mutation and gene flow
• Genetic diversity allows a population to adapt to changes in the environment
• Gene flow enhances genetic diversity by mixing alleles between populations.


  True
• What does genetic diversity refer to within a population or species?

  Variety of genetic information
• What is the effect of mutation on genetic diversity?

  Introduces new variations
• Match the characteristics of genetic diversity with its opposing trait:

  High resilience to diseases ↔️ Vulnerability to outbreaks

  Increased adaptive potential ↔️ Limited ability to evolve

  Healthy ecosystems ↔️ Unstable ecosystems
• Arrange the following processes in the order they contribute to genetic diversity:

  1️⃣ Mutation creates new alleles

  2️⃣ Gene flow mixes alleles between populations

  3️⃣ Environmental changes favor adaptive traits

  4️⃣ Species evolve with increased diversity
• What is the effect of high genetic diversity on a population's ability to respond to environmental changes?

  Increases their ability
• Genetic diversity arises from differences in the DNA sequences of individuals.

  True
• What is the effect of mutation on genetic diversity?

  Introduces new variations
• What happens to a population with low genetic diversity in response to environmental changes?

  Increased vulnerability
• Maintaining high genetic diversity is crucial for the long-term survival and adaptability of a species.


  True
• Mutations can be influenced by environmental factors.

  True
• Genetic diversity enables species to cope with environmental changes and resist diseases
• High genetic diversity is essential for the long-term survival and adaptability of a species.

  True
• What example is used to illustrate adaptation to environmental changes in the peppered moth?

  Industrial pollution
• Two main sources of genetic diversity

  1️⃣ Mutation

  2️⃣ Gene Flow
• Genetic diversity is crucial for the survival and adaptability of species to cope with environmental changes
• Genetic drift, bottleneck effect, and founder effect all reduce genetic diversity
• Natural selection favors advantageous traits, which helps maintain genetic diversity.

  True