sexual reproduction is a source of genetic variatio in offspring
sexual_reproduction is biological_reproduction. sexual_reproduction is not reproduction. sexual_reproduction is reproduction. males_and_females has not genital_intercourse_to_create_offspring offspring is relative. fertile_animal is sexually_mature_thing. males_and_females has genital_intercourse_to_create_offspring anisogamy is sexual_reproduction. sexual_reproduction is not biological_reproduction. offspring is product_of_sexual_activity.