News tagged with reproductive success
Related topics: females , offspring
Reproductive success
Reproductive success is defined as the passing of genes onto the next generation in a way that they too can pass those genes on. In practice, this is often a tally of the number of offspring produced by an individual. A more correct definition, which incorporates inclusive fitness, is the relative production of fertile offspring by a genotype. For example, the offspring produced as a result of normal mating are an example of reproductive success, because they too can pass their genetic material on to the next generation. Alternatively, the birth of a mule as a result of the mating of a horse and a donkey is not an example of reproductive success because the mule is sterile and thus not able to continue the germ line.
Reproductive success is part of the calculation for fitness and a key element in the theories of natural selection and evolution.
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How can evolutionary biology explain why we get cancer?
Over 500 billion cells in our bodies will be replaced daily, yet natural selection has enabled us to develop defenses against the cellular mutations which could cause cancer. It is this relationship between evolution and ...
Cancer
Jan 22, 2013 |
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Women trying to have babies face different clock problem
A new Northwestern University study shows that the biological clock is not the only clock women trying to conceive should consider. The circadian clock needs attention, too.
Obstetrics & gynaecology
May 23, 2012 |
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Inflammation may link obesity and adverse pregnancy outcomes
A number of different immunological mechanisms ensure the successful establishment and maintenance of pregnancy. Imbalance in these mechanisms is associated with adverse pregnancy outcomes. In a review published in Advances in ...
Health
Jan 10, 2012 |
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Interethnic marriage between African- and Native-Americans produced many children
American Indians with African ancestry outdid 'full bloods' in reproductive terms in the early 1900s, despite the odds being against them, according to a new study by Michael Logan from the University of Tennessee in the ...
Health
Nov 30, 2011 |
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