Cloning Quiz
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5 questions, one answer each
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1. What is a clone?
- A. An organism produced by sexual reproduction
- B. An organism that is genetically identical to its parent
- C. Any offspring of two different species
- D. An organism with a mutated genome
2. In micropropagation, what is an explant?
- A. A whole adult plant
- B. A small piece of plant tissue used to start the culture
- C. A type of plant hormone
- D. A sterile growth medium
3. In the production of a cloned mammal, where does the diploid nucleus used come from?
- A. An unfertilised sperm cell
- B. A mature (somatic) cell of the animal to be cloned
- C. The enucleated egg cell itself
- D. A random donor embryo
4. Why is the egg cell enucleated before the diploid nucleus is inserted?
- A. To remove its cytoplasm
- B. So the resulting embryo will be genetically identical to the nucleus donor, not the egg donor
- C. To make the egg cell divide faster
- D. Enucleation is not actually required
5. A farmer wants to produce a large number of genetically identical, disease-resistant crop plants quickly, regardless of season. Which technique is most appropriate, and why?
- A. Selective breeding, because it changes the genome over generations
- B. Micropropagation, because explants can be grown in vitro under controlled conditions all year round to give many identical plants
- C. Somatic cell nuclear transfer, because it works on any organism
- D. Natural seed germination, because it is fastest