| 1. | Elasmobranchs are ovoviparous, have relatively long gestation period s, and internal fertilization.
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| 2. | Adults mate during the months of August and September using internal fertilization.
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| 3. | In chimpanzees, as in most mammals, internal fertilization gives females last word,
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| 4. | For many species in the animal kingdom, characteristic of internal fertilization.
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| 5. | While they may have used internal fertilization, this has yet to be demonstrated.
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| 6. | During internal fertilization, however, fertilization occurs inside the female's sexual organs.
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| 7. | These are the only North American frog species that reproduce by internal fertilization.
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| 8. | Fertilization is generally external but in a few species, internal fertilization takes place.
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| 9. | Like most arachnids, spiders have internal fertilization by indirect sperm transfer.
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| 10. | Internal fertilization and similar courtship behavior are seen in modern salamanders.
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