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Factors Affecting Reproductive Health - Mr-Corrente
Factors Affecting Reproductive Health - Mr-Corrente

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Sexual Reproduction
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No Slide Title
No Slide Title

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Chapter 46 - LBCC e
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Reproduction - Edquest Science
Reproduction - Edquest Science

... does not always involve male and female parents, but can have specialized gametes (reproductive cells that have only one role - to join with another gamete during reproduction). Sexual Reproduction in Animals Sexual reproduction in animals involves gametes. The male gametes are called sperm cells, a ...
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Anisogamy



Anisogamy (noun) (also called heterogamy) refers to a form of sexual reproduction involving the union or fusion of two dissimilar gametes (differing either in size and/or form) — anisogamous, anisogamic, (adj.). The smaller gamete is considered to be male (sperm cell), whereas the larger gamete is regarded as female (egg cell).There are several types of anisogamy. Both gametes may be flagellated and thus motile. Alternatively, neither of the gametes may be flagellated. This situation occurs for example in some algae and plants. In the red alga Polysiphonia, large non-motile egg cells are fertilized by small, non-motile spermatia. In flowering plants, the gametes are non-motile cells within gametophytes.The form of heterogamy that occurs in animals, including humans, is oogamy. In oogamy, a large, non-motile egg cell (ovum) is fertilized by a small, motile sperm cell (spermatozoon). The large egg cell is optimized for longevity, whereas the small sperm cell is optimized for motility and speed. The size and resources of the egg cell allow for the production of pheromones, which attract the swimming sperm cells.
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