7.3 Artificial Selection

• What is the driving force behind natural selection?

  Environmental conditions
• Natural selection leads to adaptation, while artificial selection leads to targeted traits


  True
• In artificial selection, breeding is based on desired traits
• In artificial selection, the driving force is human preference
• What is directly altered in genetic modification?

  DNA
• Match the method of artificial selection with its description:

  Selective Breeding ↔️ Choosing individuals with desired traits

  Genetic Modification ↔️ Altering an organism's DNA
• Artificial selection can increase genetic diversity in a population

  False
• Selective breeding relies on existing genetic diversity


  True
• A disadvantage of artificial selection is the potential loss of genetic diversity
• Effects of artificial selection on populations

  1️⃣ Changes in the gene pool

  2️⃣ Changes in phenotypes
• What is the driving force behind natural selection?

  Environmental conditions
• What is an advantage of artificial selection?

  Disease resistance
• The selection mechanism in artificial selection is breeding based on desired traits
• Artificial selection contrasts with natural selection, where environmental conditions are the driving force
• Order the outcomes of natural and artificial selection.

  1️⃣ Adaptation to the environment

  2️⃣ Specific characteristics in offspring
• In natural selection, organisms reproduce based on human preference.

  False
• Match the method with its description:

  Selective Breeding ↔️ Choosing individuals with desired traits to breed together

  Genetic Modification ↔️ Directly altering an organism's DNA
• What is the selection mechanism in natural selection?

  Survival and reproduction
• What is manipulated in genetic modification?

  DNA
• The two main methods of artificial selection are selective breeding and genetic modification
• Artificial selection can reduce genetic diversity
• Selective breeding relies on existing genetic diversity within a species.


  True
• Give an example of artificial selection in agriculture.

  Selective breeding of corn
• The loss of genetic diversity is a disadvantage of artificial selection.


  True
• Artificial selection always increases genetic diversity in populations.

  False
• Dairy cattle are often selected for higher milk production
• What is an advantage of artificial selection?

  Specific, desirable characteristics