Bignell Basic Processes

Bignell Basic Processes - Fish reproduce with a male and a...

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Running head: BASIC PROCESSES 1 Basic Processes Tracy Lynn Bignell SCI230 November 26, 2010 Carleitta Paige
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BASIC PROCESSES 2 Basic Processes In order to survive all organisms need to reproduce. The process of reproduction is different in different life forms. The most common form of reproduction is asexual. The simplest is sexual reproduction. Asexual Reproduction is when one cell becomes two under favorable environmental conditions. This process is called binary fission in prokaryotic cells and mitosis in all others. In some bacteria, the resultant cells separate immediately and become independent organisms. Conjugation is the simplest form of sexual reproduction. This is when a pilus, a cytoplasmic bridge, develops between two individuals through which a one-way exchange of genetic material occurs. There are three different types of life cycles: the Diploid cycle; this cycle is seen in all animals, some protists, and algae: Haploid cycle; this is frequently seen in fungi, and in some algae: and, alternating cycle; all plants and some algae live this life cycle.
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Unformatted text preview: Fish reproduce with a male and a female fish. After building a nest the eggs are released by the female fish, into the nest. At the same time the male fish is releasing the sperm into the nest. Frogs reproduce a lot like fish. The male frog will attach his self to the female frog, in some cases several days. When the female releases the eggs in the water the male will release the sperm. The bear reproduces like humans, they are placental mammals the egg is stored inside the females body. The placenta attaches to the embryo to provide nutrients, oxygen, and other substances. For the bear to reproduce their needs to be a male and a female bear. Fertilization takes place in the mother’s body. The bears must have sexual intercourse in order for the male to fertilize the female’s egg. BASIC PROCESSES 3 All forms of life reproduce in one form or another. The two types of reproduction are asexual and sexual reproduction. Without reproduction life as we know it will come to an end....
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This note was uploaded on 09/09/2011 for the course FINAL SCI230 taught by Professor Paige during the Winter '11 term at University of Phoenix.

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Bignell Basic Processes - Fish reproduce with a male and a...

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