(PhysOrg.com) -- A roundworm with a mix of male, female and hermaphrodite offspring is offering researchers at UT Arlington a look at a species in transition from one mode of reproduction to another.
Plants & Animals
Sep 9, 2011
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Reproduction at old age involves risks that may impact one's own life and may impose reduced biological fitness on the offspring. Such evidence, previously obtained in humans and other taxa under laboratory conditions, has ...
Evolution
Mar 9, 2015
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(Phys.org) —A trio of Iowa State University researchers has predicted, in a paper published in The American Naturalist, that the painted turtle (Chrysemys picta) faces extinction over the next century due to global warming. ...
New research in mice has found that a father's stress affects the brain development of his offspring. This stress changes the father's sperm, which can then alter the brain development of the child. This new research provides ...
Plants & Animals
Feb 16, 2018
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It's all about the grandkids! That's what a team led by an Indiana University biologist has learned about promiscuous female birds and why they mate outside their social pair.
Plants & Animals
Aug 31, 2011
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Quality sperm, good genes, and courtship knowledge are just a few reasons why females might benefit from mating with older males.
Plants & Animals
Jan 25, 2018
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Female mammals, including humans, may try to outcompete one another by producing bigger babies, ground-breaking research conducted by scientists at the University of Exeter has suggested.
Evolution
Feb 1, 2016
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Killer whales are just one of three species – we're one of the others - that continue to live long after they've stopped reproducing. But scientists still don't know why these three alone evolved this unusual menopausal ...
Plants & Animals
Oct 17, 2013
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Females influence the gender of their offspring so they inherit either their mother's or grandfather's qualities. 'High-quality' females – those which produce more offspring – are more likely to have daughters. ...
Plants & Animals
Jan 9, 2012
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Jean-Baptiste Lamarck would have been delighted: geneticists no longer dismiss out of hand his belief that acquired traits can be passed on to offspring. When Darwin published his book on evolution, Lamarck's theory of transformation ...
Evolution
Sep 20, 2011
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