Answer:
swallow
Explanation:
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The most specialized organism is the GRIZZLY BEAR. Specialized animals refers to those animals, which have different types of cells in their body which carry out different types of functions.
I agree with the person above - reproductive cells or sex cells are called gametes.
When it comes to women, these gametes are called an ovum, or an egg, and when it comes to men, gametes are called sperm.