In flowering plants, the beginning of embryogenesis is almost exclusively governed by maternal gene activity. Maternal factors regulate the development of the embryo and silence paternal genes during early stages of development. ...
Biotechnology
May 31, 2011
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Mate guarding is classified as excessive or unwarranted jealous or protective behavior towards a spouse or mate. This is common among many different species and can be useful to defend territory, guarantee paternity, or prevent ...
Social Sciences
Feb 1, 2011
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In modern culture, it is not considered socially acceptable for married people to have extramarital sexual partners. However, in some Amazonian cultures, extramarital sexual affairs were common, and people believed that when ...
Social Sciences
Nov 10, 2010
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(PhysOrg.com) -- It is widely believed that women live long post-reproductive lives to help care for their grandchildren. According to the "Grandmother Hypothesis," post-menopausal women can increase their genetic contribution ...
Evolution
Oct 29, 2009
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A new study has revealed that mother birds can provide an early advantage to the chicks that they have sired with their non-social partner (known as extra-pair offspring).
Plants & Animals
May 14, 2009
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A new study reveals that - contrary to decades of evolutionary thought - chromosome regions that are prone to breakage when new species are formed are a rich source of genetic variation.
Cell & Microbiology
Apr 23, 2009
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