Quizs: Natural Selection Quiz

What is a mutation?

• A change to the genetic material of an organism; any change in the DNA of a gene.

• A process that only occurs in plants.

• A type of genetic disease that is inherited.

• A method of cloning organisms.

What is epigenetics?

• Changes to gene expression that don’t alter the DNA code.

• Permanent alterations to the DNA sequence.

• The study of genetic mutations over generations.

• The process of DNA replication in cells.

What is a mechanism of evolution?

• Genetic drift, where allele frequencies change by chance.

• Natural selection, where helpful traits become more common over generations.

• Mutation, which introduces new traits randomly.

• Gene flow, which is the transfer of genetic material between populations.

What is natural selection?

• Natural selection is a process where individuals better adapted to their environment are more likely to survive and reproduce.

• Natural selection is the process by which organisms develop new traits to adapt to their environment.

• Natural selection is a method of breeding plants and animals for desired traits.

• Natural selection is the phenomenon where all individuals in a population have an equal chance of survival.

What are some examples of epigenetics?

• Smoking can lead to gene expression changes passed to grandchildren, increasing asthma risk.

• All genetic traits are solely determined by DNA sequences without any influence from the environment.

• Identical twins have the same genes but have different traits later in life due to their unique experiences in their environment.

• Epigenetics has no impact on health or disease.

What did Darwin do to study evolution's mechanisms?

• Studied artificial selection (e.g., pigeon breeding) and proposed natural selection as the mechanism of evolution.

• Conducted experiments on plant hybridization and its effects on species diversity.

• Analyzed fossil records to determine the age of the Earth and its species.

• Developed a theory of inheritance based on Mendelian genetics.

What is expression?

• The act of showing or making known; representing.

• A mathematical calculation involving numbers and symbols.

• A form of artistic representation, such as painting or music.

• A method of communication that involves only verbal language.

What is artificial selection?

• A process where nature selects organisms for survival

• When humans select for and breed organisms with a desired trait.

• A method of genetic engineering to modify organisms

• A natural process of evolution without human intervention.

What does it mean if a gene is expressed or not expressed?

• Whether a gene is turned on or off in an organism; whether an inherited characteristic is observed on a living thing or not.

• The physical location of a gene on a chromosome.

• The number of copies of a gene present in an organism.

• The rate at which a gene is replicated during cell division.

What is competition?

• Struggle among organisms to survive as they try to use the same limited resources. Only well-adapted individuals survive and pass on their traits.

• A cooperative interaction where organisms work together to access resources.

• The process by which organisms evolve to become more similar over time.

• A method of resource allocation where organisms share resources equally.