Asexual vs Sexual Reproduction
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Asexual reproduction involves a single parent and produces offspring that are genetically identical clones through cell division or budding. It is fast but leaves no genetic variation, so all offspring could be vulnerable to the same diseases. Sexual reproduction involves two parents who produce gametes through meiosis that combine to create genetically unique offspring, introducing variation but taking more time and energy.
Asexual vs Sexual Reproduction
- 1. Reproduction Learning Goals: To be able to explain Asexual Reproduction To be able to explain Sexual Reproduction To be able to give advantages and disadvantages for each
- 3. What is reproduction? Reproduction is the production of new members of a species, replacing those who die due to old age, disease, competition etc. It is divided into two main types: Sexual reproduction involves two parents who have sex organs which produce sex cells. Asexual reproduction involves one parent and no sex cells
- 4. Asexual Reproduction Offspring arise from a single parent Offspring are identical in every way to their parent: clones Mitosis is means by which these clones are produced.
- 5. Mitosis A type of cell division that results in two daughter cells each the same as the parent cell The DNA of the daughter cells is identical as all the DNA comes from one parent
- 6. Types of Asexual Reproduction Fission: simple cell splitting. (this can happen for single cells or clusters of cells) Bacteria Cell Division Budding: the offspring which separates is smaller that the parent (e.g. yeast or potatoes)
- 7. Types of Asexual Reproduction Vegetative propagation: the formation of miniaturised plant from specialised leaves or runners Strawberry Plants
- 8. Asexual Reproduction: Pros and Cons The offspring already adapted for their environment There is no need to find a mate, which takes extra energy A very fast way of reproduction: can be good and bad (overpopulation) All offspring are clones: if one get sick, they all get sick
- 9. Sexual reproduction Offspring arise from a two parents Offspring are a combination of the DNA of both parents sex cells (gametes) Meiosis is means by which these gametes are produced.
- 10. Meiosis A type of cell division that results in half the required DNA for a new organism In most cases, male gametes are known as sperm, and female gametes are known as eggs The offspring is a combination of traits from the male and female parent
- 11. Sexual Reproduction: Pros and Cons The offspring's DNA is different: is prepared for any changes. Any disease that affects some of the offspring will not affect all of them This variation in DNA leads to evolution Takes time and energy to find a mate
- 12. Video Explanation of Reproduction: http://youtu.be/ELvTgZnTwSI
- 14. Reproduction 6 Quick Question: 1. 2. 3. 4. 5. 6. What is Asexual Reproduction Give an example of asexual reproduction One Benefit and one Disadvantage What is Sexual Reproduction? Give one example of sexual reproduction One benefit and one disadvantage