polyembryony

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Hemp (Cannabis sativa).

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Sunlight shining on leaves. Photosynthesis

What Does Photosynthesis Produce?

Flower bingo

Britannica’s Flower Bingo

Palm House conservatory of Kew Gardens, London, England. (formal garden, glass house, greenhouse)

How Botanical Gardens Save Plants with Science

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John F. Kennedy as a boy with his family

What Did We Call America’s Elite Before the “1 Percent”?

Ethel Rosenberg arrested in August 1950. Photograph dated Aug. 8, 1950. American civilians executed for espionage. Spies, communists, Julius Rosenberg

Spies Like Us: 10 Famous Names in the Espionage Game

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

Thanksgiving Turkey with all the sides

Why Do We Eat Turkey on Thanksgiving?

Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.

Why Is the Mona Lisa So Famous?

Thanksgiving Celebration Traditional Dinner Setting Food Concept

Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

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polyembryony: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Topics

multiple birth embryo embryo sexual differentiation gestational age implantation cleavage segmentation neural crest umbilical cord induction histogenesis notochord

Key People

Filippo Silvestri

Italian entomologist