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    Research: The Conversation: We reconstructed the genome of the 'first animal'
    Submitted by J.W. Bizzaro; posted on Thursday, May 03, 2018

    Submitter

    EXCERPT

    Previous research on lifeforms that are closely related to animals – single-celled organisms such as choanoflagellates, filastereans and ichthyosporeans – has shown they share many genes with their animal cousins. This means that these genes are older than animals themselves and date back to some common ancestor of all these creatures. So the recycling of old genes into new functions, a kind of genome tinkering, must have been an important force in the origin of animals.

    But Professor Peter Holland and I wanted to find out which new genes emerged when animals evolved. We used sophisticated computer programs to compare 1.5m proteins (the molecules that genes contain the instructions for) across 62 living genomes, making a total of 2.25 trillion comparisons to find out which genes are shared between different organisms today.
    Source: theconversation.com/we-r[...]95900

    ARTICLE

    J. Paps and P.W.H. Holland. 2018. Reconstruction of the ancestral metazoan genome reveals an increase in genomic novelty. Nature Communications 9: 1730. doi.org/10.1[...]136-5

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