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Hace 2 días · In the 19th century, biologists Charles Darwin and Jean Baptiste Lamarck both speculated that giraffes’ long necks helped them reach acacia leaves high up in the trees, though they likely weren’t observing actual giraffe behavior when they came up with this theory.Several decades later, when scientists started observing giraffes in Africa, a group of biologists came up with an alternative ...
Hace 2 días · Giraffe necks are a hot topic among biologists. A new study contradicts an older theory that says male giraffes need long necks to fight over mates.
Hace 3 días · Graham Mitchell, a prominent giraffe biologist, has called the giraffe body “a shape to die for.” In captivity, where staff can determine the cause of death, well over half of male giraffes die from foreleg problems, which shortens their lifespan by 25% compared with females. Very few female giraffes die from health issues related to their ...
Hace 3 días · Female giraffes drove the evolution of long giraffe necks in order to feed on the most nutritious leaves, new research suggests By Douglas R. Cavener , Penn State Updated June 5, 2024 10:03 a.m.
Hace 5 días · Admixture and introgression analyses reported by Bertola et al.2 show that the genomic ancestry of Reticulated giraffes is derived from the ancestral lineages that gave rise to the Northern giraffe species (∼60%) and to the Masai and Southern giraffe species (∼40%), suggesting Reticulated giraffes are the product of reticulate evolution.
Hace 2 días · Published June 6, 2024 5:30AM (EDT) Two male lions meet and start to walk shoulder to shoulder with the same step. (Getty Images/Massimo Mei) "Queer Planet," a new documentary now streaming on ...
Hace 1 día · Washington judge denies GOP attempt to keep financial impact of initiatives off November ballots. A judge has ruled that information about how much money three GOP-backed initiatives would cost ...
