Mechanisms that Increase Genetic Variation

What is the primary role of genetic variation in a population?

• To decrease the rate of mutation

• To allow for adaptation to changing environments

• To ensure all individuals are identical

• To prevent natural selection

What is a significant consequence of inbreeding within a population?

• Increased genetic diversity

• Reduced expression of recessive traits

• Accumulation of deleterious recessive alleles

• Enhanced adaptability to new environments

Which of the following mechanisms allows prokaryotes to acquire genetic variation horizontally?

• Sexual reproduction

• Transformation

• Meiosis

• Random fertilization

Which process contributes to genetic variation during sexual reproduction in eukaryotes?

• Binary fission

• Budding

• Crossing over

• Mitosis

Which process involves a virus transferring genetic material from one bacterium to another?

• Conjugation

• Transformation

• Transduction

• Replication

What is the primary method by which bacteria transfer plasmids, often contributing to the spread of antibiotic resistance?

• Binary fission

• Conjugation

• Transduction

• Transformation

During which meiotic event do homologous chromosomes exchange segments of genetic material, resulting in recombinant chromosomes?

• Independent assortment

• Crossing over

• Random fertilization

• DNA replication

What process during meiosis involves the random alignment and separation of homologous chromosomes, leading to diverse combinations of alleles in gametes?

• Crossing over

• Random fertilization

• Independent assortment

• Gene mutation