What is inbreeding depression and how does it affect the fitness of a population?

• A. Inbreeding depression increases genetic variation and fitness.
• B. Inbreeding depression refers to reduced fitness due to increased homozygosity of deleterious recessive alleles.
• C. Inbreeding depression has no impact on fitness.
• D. Inbreeding depression increases fitness by eliminating recessive alleles.

Answer: (B)