Evolution Video Quiz: Understanding Evolution: A Deep Dive

What does 'fitness' mean in a biological context?

• The ability to survive in harsh conditions

• The speed at which an organism can move

• The physical strength of an organism

• The number of offspring an organism produces

Which statement best describes biological evolution?

• Populations evolve over generations through inherited traits

• Evolution always results in more complex organisms

• Evolution is a process that has already been completed

• Individuals evolve within their lifetimes

What does the term 'gene pool' refer to?

• A collection of all genes in a single organism

• A storage area for genetic material in a laboratory

• The total genetic diversity found within a population or species

• A type of genetic database used by researchers

What is gene flow?

• The movement of genes within an individual

• The transfer of genes from parent to offspring

• The movement of genes between populations

• The process of genes mutating within a population

What role do mutations play in evolution?

• They prevent evolution from occurring

• They provide new genes to the gene pool

• They are always harmful to organisms

• They decrease genetic diversity

What is genetic drift?

• A deliberate change in the genetic makeup of a population

• A change in genetic makeup due to selective breeding

• A random change in the genetic makeup of a population

• The movement of genes from one species to another

What does natural selection favor?

• The fastest individuals in a population

• Individuals with traits best suited to their environment

• The largest individuals in a population

• The strongest individuals in a population

What are homologous structures?

• Randomly occurring structures in a population

• Structures in different species with a common ancestor

• Structures that appear during embryonic development

• Structures in different species with a common function

What are vestigial structures?

• Structures that are identical in all related species

• Structures that are fully functional in all species

• Structures that have lost most or all of their ancestral function

• Newly evolved structures that are crucial for survival

What does embryology study?

• The genetic makeup of embryos

• The mutations occurring during embryonic development

• The development stages of embryos and their similarities

• The fossilized remains of embryos