Evolution by Natural Selection

What is genetic variation?

• Differences in DNA among individuals in a population.

• The process of natural selection acting on a population.

• The study of how traits are inherited from parents to offspring.

• The total number of genes in an organism's genome.

What is an adaptation?

• A trait that helps an organism survive in its environment.

• A type of food that organisms consume.

• A method of reproduction in animals.

• A seasonal change in an organism's behavior.

What is survival of the fittest?

• A phrase that describes the process of natural selection, where the fittest individuals are more likely to survive and reproduce.

• A theory that suggests all individuals have an equal chance of survival regardless of their traits.

• A concept that implies only the strongest animals can survive in the wild.

• A belief that fitness is determined solely by physical strength.

What is evolution?

• Change over time in a population.

• A sudden change in an organism's DNA.

• The process of creating new species instantly.

• A method of improving agricultural crops.

What is the difference between dominant and recessive alleles?

• Dominant alleles require two copies to express their traits, while recessive alleles express their traits even if only one copy is present.

• Dominant alleles express their traits even if only one copy is present, while recessive alleles require two copies to express their traits.

• Dominant alleles are always more common in a population than recessive alleles.

• Recessive alleles can never be expressed in the presence of dominant alleles.

What is natural selection?

• The process by which organisms with advantageous traits are more likely to survive and reproduce.

• A method of breeding plants and animals for desired traits.

• The theory that all species evolve over time through random mutations.

• A process where organisms adapt to their environment through learned behaviors.

What is a fossil?

• The preserved remains or traces of organisms from the past.

• A type of rock formed from volcanic activity.

• A living organism that has not changed over time.

• A mineral that is commonly found in sedimentary layers.

What is a mutation?

• A change in the DNA sequence that can lead to new traits.

• A process of cell division that results in two identical cells.

• A type of genetic engineering used to create clones.

• A method of DNA replication that ensures accuracy.

What is a niche?

• The role or function of an organism within its ecosystem.

• A type of habitat where organisms live.

• A method of reproduction in animals.

• A classification of species based on their diet.

What is an inherited trait?

• A characteristic that is passed from parents to offspring through genes.

• A feature that develops due to environmental factors.

• A behavior learned from peers or society.

• A temporary change in an organism's appearance.