(PhysOrg.com) -- Scientists in Cambridge have found cracks in the long-standing theory that the number of eggs animals have -- and the size of those eggs -- is related to how much parental care they invest in their offspring.
Plants & Animals
Jun 8, 2010
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Shark pups born to virgin mothers can survive over the long-term, according to new research published Jan. 25, 2010 in the Journal of Heredity. The study shows for the first time that some virgin births can result in viable ...
Plants & Animals
Jan 25, 2010
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(PhysOrg.com) -- Milder winters are causing Scotland's wild breed of Soay sheep to get smaller, despite the evolutionary benefits of possessing a large body, according to new research due to be published in this week's Science ...
Evolution
Jul 2, 2009
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A gene that helped one species split into two species shows evidence of adapting much faster than other genes in the genome, raising questions about what is driving its rapid evolution.
Feb 5, 2009
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From microbes in the human gut to symbiotic algae in coral reefs, research in recent decades has increasingly revealed the pivotal roles that microorganisms (or microbial species) play in shaping the biology of host organisms ...
Evolution
Apr 17, 2024
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4
Young male blue tits are less successful in fathering offspring outside their breeding pair, not because of a lack of experience, but because they are outcompeted by older males, Bart Kempenaers and colleagues from the Max ...
Plants & Animals
Apr 16, 2024
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83
In primates, the biggest, bossiest males usually get to father the most offspring; and for a long time it was thought that this rule applied to orangutans too. Male orangutans openly compete; and it's the older males with ...
Plants & Animals
Dec 8, 2023
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271
According to current knowledge, individuality is determined by either differences in genome or in the apparent environmental conditions. However, studies show, the paradigm of twin research is currently crumbling.
Evolution
Nov 28, 2023
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11
When animals of two different species mate, their hybrid offspring can be unhealthy or sterile. Often, only one sex is affected.
Evolution
Nov 20, 2023
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28
White-browed sparrow weavers live in family groups in which only a dominant pair breeds and their grown-up offspring, particularly females, help to feed nestlings.
Plants & Animals
Nov 10, 2023
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52
