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Gee Research Blog

Competitive Generosity Drives Charitable Donations

Fri, 17 Apr 2015 12:09:46 +0000

Unconditional generosity is a characteristic of humans on which we pride ourselves, and billions of dollars is donated to hundreds of thousands of charitable organisations every year. But look at it from an evolutionary perspective, and this trait seems difficult to explain. In some situations, giving may have evolved to advertise positive characteristics of the […]

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Annoucing the Winners of the Write About Research Competition

Fri, 10 Apr 2015 13:49:07 +0000

Thanks to everyone who entered our Write About Research competition. We received some great entries from GEE students and postdocs, covering a broad range of topics from conservation to genetics. The entries will be posted here over the coming months, so watch this space! The Winners are… Drum roll please … WINNER: David Curnick – […]

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Male Promiscuity Boosts Role of Chance in Sex Chromosome Evolution

Thu, 19 Mar 2015 15:02:31 +0000

Humans, like all mammals and birds, determine sex with chromosomes. Whether a fertilised egg develops into a male or female depends on what chromosomes it carries Scientists have long recognised that genes evolve a little differently on the sex chromosomes, and recent research in GEE suggests this may be due to differing patterns of inheritance […]

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Sloths Move Slow, Evolve Fast

Wed, 11 Mar 2015 18:20:41 +0000

Sloths might be notorious for their leisurely pace of life, but research published last year shows they are no slow coaches when it comes to evolution. Sloths, as we know and love them, are small, slow-moving creatures found in the trees of tropical rainforests. But modern sloths are pretty odd compared to their extinct relatives. […]

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Write About Research – A GEE Research Blog Competition

Tue, 03 Mar 2015 15:28:43 +0000

The GEE Research blog communicates UCL science with a wider, non-specialist audience, by providing short summaries of recent research in the department of UCL Genetics, Evolution and Environment. This provides an opportunity to engage with a broad audience, including other academics, students, members of the public, and even businesses and policy-makers. It is a great […]

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29 April 2013


‘All about sex in fish’


Speaker:

Paulino Martinez
University of Santiago de Compostela, Spain
Date & Time:
Wednesday, 8 May at 5pm
Venue: Medical Sciences AV Hill Lecture Theatre (map)
Host: Judith Mank (Ext 54228)


Abstract:

Sex is a ubiquitous feature in the living world and, although a general consensus exists on its relevance for obtaining new genetic combinations for adaption, the presence of different sexes introduces new evolutionary scenarios for live. Sex determination is an especial developmental pathway, where an undifferentiated gonad is driven towards an ovary or a testis at a specific time of development mostly depending on the genetic constitution of the individual. Our view of sex determination and its evolution has been very influenced by the studies on Drosophila, mammals and birds, where a stable genetic mechanism reflected as a chromosome heteromorphism associated to a particular model of inheritance is present. Fish have demonstrated a very different pattern of sex evolution. Different genes and even environmental variants play a role and changes in sex determination can occur in a very short period of evolutionary time.


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