The technique of producing a genetically identical copy of an organism by replacing the nucleus of an unfertilized ovum with the nucleus of a body cell from the organism is:
Correct answer: B. Cloning
- A. Budding
- B. Cloning
- C. Parthenocarpy
- D. Fission
Explanation
Organisms produced from a single cell by subculturing (cloning) are called clones. In animals and especially among vertebrates, a nucleus from the somatic cell is removed and introduced into an egg cell, whose own nucleus has been destroyed by ultraviolet radiation. The egg with a transplanted diploid somatic cell nucleus develops into an organism, genetically identical to the parent who has contributed the nucleus.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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