Cellular Reproduction Asexual Reproduction only one parent is
- Slides: 15
Cellular Reproduction
Asexual Reproduction � only one parent is involved. � 100% of the genetic material from the one parent is passed on. �Bacteria primarily reproduce asexually.
Examples of Asexual Reproduction Binary fission �organism splits directly into two equal-sized offspring �usual type of reproduction in prokaryotes (bacteria)
Examples of Asexual Reproduction Budding � formation of a new organism by the protrusion of part of another organism �common in plants and fungi �The picture to the right is yeast budding (like it’s growing out of the side of the yeast)
Hydra Budding �Hydra is considered an animal and here it is budding. �Notice the protrusion sticking out of the right side of the Hydra.
Sporogenesis (spores) �when plants asexually produce small tiny spores on their outside leaves. � growths will usually detach from the organism and grow on another medium such as the ground. �Some Fungi also sometimes undergo this process.
Vegetative reproduction �type of asexual reproduction for plants � new plant "individuals" arise or are obtained without production of seeds or spores
Fragmentation �fragment develops into a mature, fully grown individual �new individual is a clone of the original organism. �Sea Stars, Fungi, and some Worms do this.
Advantages of Asexual Reproduction �Only one parent is required. �If you have good genes it is great because 100% of them are passed on. �Very quick reproduction
Disadvantages of Asexual Reproduction � no genetic variation (if there is a genetic mutation or disease they are very hard to combat) �Parents look entirely like offspring. If humans did this we would all look the same. (not much fun)
The Importance of Genetic Variation. � allows individuals within a given species to adapt to their environment � we are different because of genetic variation � we are able to adapt this is known as survival of the fittest or natural selection. � make organisms different and if it occurs over a long enough period of time we can get new species
Sexual Reproduction �requires two parents (sperm and egg) � 50% of the genetic material is passed on from each parent �fair amount of genetic variation because new genes are integrated (fertilized cell –zygote) � Most multi-cellular organisms reproduce sexually
Advantages to Sexual Reproduction �genetic variation �Both parents are passing on 50% of their genetic material so it’s easier to get rid of genetic mutations and diseases. �produces variation in the population �species is more likely to survive if there are genetic differences in the population
Disadvantages of Sexual Reproduction �to find a mate �Only ½ your genes are passed on (this is bad if you had great genes they can be diluted) �Slow process
Review: Compare and Contrast �Mitosis - type of nuclear and cell division that is used both in growth and asexual reproduction �Meiosis - type of nuclear and cell division that is used to make the sperm and eggs used in sexual reproduction
- What type of reproduction involves only one parent
- Venn diagram of sexual and asexual reproduction
- Hare lynx
- Asexual vs sexual venn diagram
- Dahlia asexual reproduction
- Types of asexual reproduction
- Labelled diagram of platyhelminthes
- Budding asexual reproduction
- Asexual propagation examples
- Asexual propagation layering
- Types of asexual reproduction
- Asexual reproduction
- Asexual reproduction
- Sexual and asexual reproduction
- Whats sexual reproduction
- Reproduction in organism