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umka21 [38]
3 years ago
14

Describe the evolution of modern whales and dolphins using the fossil evidence

Biology
1 answer:
HACTEHA [7]3 years ago
4 0
Whales are related back to a hairy, 4-legged land mammal that eventually led to the formation of flippers without phalanges, a blow hole that became more dorsal, and other defining features. All of this has been backed by fossil evidence, especially that found within a certain desert region (can’t remember the name) that has a vast amount of whale fossils from many different time periods
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Hypophyseal portal system allows the hypothalamus to have direct communication with the anterior pituitary.

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The cortisol, androgens, and aldosterone hormones interact with anterior pituitary gland cells via travelling through the hypophyseal portal system. Hormonal signaling through the hypophyseal portal system enables connection between these two structures.

To learn more about hypothalamus and pituitary here,

brainly.com/question/28013779

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8 0
1 year ago
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