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New book explores evolution of human reproduction

By Guest PostAugust 24, 2013Sciencebiological anthropology, breast feeding, carl Linnaeus, catholic church, chicken, cloning, conditions, egg, enhanced reproductive techniques, evolution of human reproduction, field museum, french, german, glossary, good cocktail, mammals, ming dynasty, miscarriage, modern human concerns, natural mothers, new book, ovulation, polygamy, primate evolution, reflection, research, robert martin, university of zurich

Human beings would probably be known as pilosals rather than mammals if Carl Linnaeus had not been a proponent of breast-feeding. For social and political reasons, the famed taxonomist labeled the class of animals to which humans belong with a reference to their practice of suckling their young rather than to their evolutionarily older characteristic of having hair.

This is just one of the hundreds of surprising pieces of information that readers will glean from the far-reaching and fascinating How We Do It: The Evolution and Future of Human Reproduction, a new book by Robert Martin, a member of the University’s of Chicago’s Committee on Evolutionary Biology and curator of biological anthropology at the Field Museum. (more…)

Timely Ends: Telomere Length in Early Life Predicts Lifespan

By Guest PostJanuary 14, 2012Scienceblood cells, britt heidinger, cells, chromosomes, conditions, DNA, dna protection, environmental factors, exeter, function, genetic code, jon blount, lifespan, malfunction, plastic caps, predictor of longevity, telomere cap, telomere lengths, telomeres, universities of glasgow, zebra finches

New research by a team from the Universities of Glasgow and Exeter shows that a good indicator of how long individuals will live can be obtained from early in life using the length of specialised pieces of DNA called telomeres.

Telomeres occur at the ends of the chromosomes, which contain our genetic code.

They function a bit like the plastic caps at the end of shoelaces by marking the chromosome ends and protecting them from various process that gradually cause the ends to be worn away. This method of DNA protection is the same for most animals and plants, including humans, and the eventual loss of the telomere cap is known to cause cells to malfunction. This study is the first in which telomere length has been measured repeatedly from early in life of an individual and then for the rest of their natural lives. The results show that telomere length in early life is strongly predictive of lifespan. (more…)

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New book explores evolution of human reproduction

Timely Ends: Telomere Length in Early Life Predicts Lifespan