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14 hours ago · The lion sire passes on a growth-promoting gene, but the corresponding growth-inhibiting gene from the female tiger is absent, so that ligers grow far larger than either parent species. By contrast, the male tiger does not pass on a growth-promoting gene, and the lioness passes on a growth inhibiting gene; hence, tigons are around the same size ...
14 hours ago · A map of North America's physical, political, and population characteristics as of 2018. North America is a continent in the Northern and Western Hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean.
- 24,709,000 km² (9,540,000 sq mi) (3rd)
- 23 non-sovereign territories
- 23 sovereign states
- 592,296,233 (2021; 4th)
