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  • Ordinary Animals and the genetics of being sexy

    By Jack Ashby, on 9 November 2017

    The Grant Museum’s current exhibition – The Museum of Ordinary Animals: The Boring Beasts that Changed the World ­­- explores the mundane creatures in our everyday lives. Here on the blog, we will be delving into some of the stories featured in the exhibition with the UCL researchers who helped put it together.

    Guest post by Professor Judith Mank (UCL Genetics, Evolution and Environment)

    Dominant males have all the things that turkey hens want, including long snoods and vibrant wattles. Subordinate males are by comparison rather plain. (Photo by Lupin on Wikimedia. CC BY-SA 3.0)

    Dominant males have all the things that turkey hens want, including long snoods and vibrant wattles.
    (Photo by Lupin on Wikimedia. CC BY-SA 3.0)

    In all species, some individuals are simply better looking than others, and they have the right shape, colour or attitude that makes them irresistible to the opposite sex of their species. Scientists have generally assumed that good looks come primarily from good genes, but this presents an enigma: if only individuals with the best genes pass them on in every generation, those sexy genes should spread and soon the entire population should be equally attractive.

    So… how is that unattractive genes persist in populations? Why doesn’t evolution wipe them out? (more…)

    Natural Creativity: Sex and Trickery opens at the Grant Museum

    By Jack Ashby, on 18 October 2016

    ‘Natural Creativity: Sex and Trickery’ is our new exhibition – opening tomorrow 19th October –  at the Grant Museum. It explores the myriad of elaborate shapes, sizes and crafty behavioural tactics some animals have evolved in order to survive, reproduce and pass on their genes.

    Through intricate drawings by the artist Clara Lacy, ‘Natural Creativity’ asks the question, why is the natural world so colourful and varied? Lacy has drawn species with highly unusual sexual behaviours or mechanisms for determining sex. It is commonly assumed that animals are born either male or female then reproduce as adults, but things can get much more interesting. Some species change sex over their lifetime, become a grandmother before giving birth, or trick others into thinking they belong to the opposite sex.

    Ocellated wrasse (C) Clara Lacy.

    Ocellated wrasse (C) Clara Lacy.
    The ocellated wrasse has an unusual mating system – different males use different strategies in the attempt to pass on their genes. The genetics of these strategies is being researched at UCL. “Nesting males” are brightly coloured and work to court females, defend nests and care for their young. These males attract the most females, but other males have evolved different routes to mating success.
    Small males become “Sneakers”. They surreptitiously approach Nesting males and females while they are mating, and then release their own sperm into the water.
    Medium-sized “Satellite males” cooperate with a Nesting male, helping them chase Sneakers from the nest. This means that they are tolerated by Nesting males, and spawn while the Nesting male is mating.

    (more…)

    Specimen of the Week 209: Mammoth tusk

    By Tannis Davidson, on 12 October 2015

    LDUCZ-Z2978 Elephantidae

    LDUCZ-Z2978 Mammuthus primigenius

    This week’s Specimen of the Week is one of the first objects to be seen upon entering the Museum. Majestically, it sits just behind the front desk cradled in a graceful arc of perfect balance and symmetry. It is the largest fossil in the Grant Museum’s collection and although incomplete, measures over 1.7m in length.  What a beaut!  This week’s specimen is…

     

    (more…)

    Grant Museum Show’n’Tell: Soda Lakes

    By Dean W Veall, on 5 November 2014

    Dean Veall here. Over the last year I’ve been hosting our new lunch hour event series Show’ n ‘ Tell, with PhD students from across UCL sharing some of their amazing research and choosing just one object from our collection of 68,000 to tell the the assembled audience what they know about it. If you couldn’t make it to our last event, fear not, Irrum Ali from UCL Communications and Marketing came along and here’s what happened.

    (more…)