Science Newsletter #15 - Bournemouth School for Girls

Are weBy u aoStill evolving?In Carles arwins rigin o pecies, e descries ow umans ave evolved trougNatural Selecon and ave ecome ow weare todayere is no ueson tat umans are uniuein te animal world – we ave developed language sills, tecnologies and metods tatimprove our lives signicantly suc as uilding long lasng ouses to selter us rom tearsness o te environment, maing oodsae and delicious or our taste udsammals and umans in parcular ave telargest rainsin te animalingdomrelave tote size oteir odies)Researc assown tat, in early mammals, te rain regions associated wit smell were muc largertan in more ‘premammal ancestorsResearcers elieve tat, te size o te rainregion associated wit smell, expanded ecause mammals proaly used teir eensense o smell to unt at nigt wic meanttey could avoid compeng ood resourceswit dinosaurs tat sared teir aitatsby?Proessor teve Jones, said ‘in aespearesme, only aout 1 in 3 Englis aies made itto e 1 All tose deats were raw materialor natural selecon, and many o tose idsdied ecause o te ‘less good genes tat teycarried But now aout 99% o all te aiesorn in developed countries mae it to tatagene may argue tat we are prevented romnatural selecon due to medical and otertecnological developments, as tey cure diseases, elp tose wo cant pass on genes topass teir genes, almost everyone lives longenoug to pass on teir genes, wit lile‘selecon or te eer genes o wat istere or natural selecon to act on?ome elieve tat we are sll evolving ut teprocess as sloweddownne example o arecent evoluon isow our metaolism as canged to