9 Questions
Which process involves the survival and reproduction of individuals with favorable traits, leading to a change in the genetic makeup of a population over time?
Natural selection
When does natural selection occur?
Throughout an organism's life
Which of the following is NOT a mechanism of natural selection?
Genetic drift
Which of the following best describes macroevolution?
The process of large-scale changes resulting in the formation of new species
What is microevolution?
The process of small-scale genetic changes within a population over time
What is the main difference between macroevolution and microevolution?
Macroevolution involves large-scale changes resulting in the formation of new species, while microevolution involves genetic changes within an individual
Population genetics is the study of how ______ change in frequency over time within a population.
alleles
______ genetics focuses on the genetic variation within and between populations of the same species.
Population
By studying population genetics, scientists can gain insights into the processes that drive ______ change and evolution.
genetic
Study Notes
Natural Selection
- Involves the survival and reproduction of individuals with favorable traits, leading to a change in the genetic makeup of a population over time
When Does Natural Selection Occur?
- Natural selection occurs when individuals with favorable traits are more likely to survive and reproduce, passing those traits to their offspring
Mechanisms of Natural Selection
- Mutation, genetic drift, gene flow, and genetic hitchhiking are mechanisms of natural selection
- NOT a mechanism of natural selection: use of antibiotics to kill bacteria
Macroevolution and Microevolution
- Macroevolution: the process of major evolutionary changes that occur over long periods of time, resulting in the formation of new species
- Microevolution: the process of small-scale evolutionary changes that occur within a population over a relatively short period of time
Population Genetics
- The study of how gene frequencies change in frequency over time within a population
- Focuses on the genetic variation within and between populations of the same species
- By studying population genetics, scientists can gain insights into the processes that drive evolutionary change and evolution
Test your knowledge on natural selection and its mechanisms with this quiz. Learn about the process that leads to a change in the genetic makeup of a population over time and discover which mechanisms are not involved in natural selection.
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