| 1. | That starts with anisogamy, which arose long before mammals appeared.
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| 2. | Here, fusion of 2 dissimilar gametes occurs, known as anisogamy.
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| 3. | Anisogamy is the fertilization of gametes of dissimilar morphology by sexual reproduction.
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| 4. | Anisogamy unequal sized gamonts is present.
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| 5. | There are several types of anisogamy.
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| 6. | Some trophozoites enlarge and become macrogamete, whereas others divide repeatedly to form microgametes ( anisogamy ).
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| 7. | Many anisogamous external fertilizers select for different traits due to anisogamy due to the nature of their fertilization.
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| 8. | The " two-fold cost of sex " may more accurately be described as the cost of anisogamy.
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| 9. | In several lineages, this form of reproduction independently evolved to anisogamy with gametes of male and female types to oogamy.
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| 10. | This is a result of anisogamy, where sperm are smaller and much less costly ( energetically ) to produce than eggs.
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