BIO Chapter 8.docx - Chapter8:(Bio101Activity...

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Chapter 8: Cellular Basis of Reproduction and Inheritance (Bio101 Activity)  Please, discuss and elaborate your answers for full mark (5 points).  Full Name:  BLANCA SORIANO   Section #: _______ Date:  2-22-18 1. Explain why cell division is essential for prokaryotic and eukaryotic life. Prokaryotic organisms reproduce by dividing in half, making the offspring genetic replicas. Cell division enables sexually reproducing organisms to develop from a single cell. Cell division also repairs and replaces cells that die. Within our body, many cells must divide every second to replace damaged or lost cells. 2. Compare and contrast asexual and sexual reproduction. Give examples of each type. An asexual reproduction, the parent’s offspring are replicas with identical genes, unlike the sexual reproduction (which is the joining of the egg and sperm); and only requires one parent. For example: Hydras reproduces asexually by developing small, genetically identical polyps that protrude from the parent. When the polyps break off from the parent, a new organism is formed. A sexual reproduction, it is required that the fertilization of the egg by the sperm; meaning two parents are required. The offspring of a sexual reproduction typically resemble their parents, but they are not identical. Each offspring inherits their own combination of their parents. For example: When a two-human being (1 women and 1 men) comes together and has a sexual intercourse; the egg is fertilized by the sperm which results of a offspring (baby). The baby will have resembled of both of the parents but will not be identical of them. 3. Explain how prokaryotes reproduce by binary fission. During the process of binary fission, the DNA molecule divides and forms two DNA molecules. Each molecule moves towards the opposite side of the bacterium. At the same time, the cell membrane divides to form 2 daughter cells.
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