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SUMMARY:On the (actual) origin of species through the lens of hybridizatio
 n. - Hilde Schneeman
DTSTART:20221117T131000Z
DTEND:20221117T140000Z
UID:TALK179468@talks.cam.ac.uk
CONTACT:Dr Tamsin Samuels
DESCRIPTION:While one can hardly express enough the immense contribution o
 f Charles Darwin’s “On the Origin of Species” to the foundation of m
 odern biology\, there is one question that this work\, despite its name\, 
 largely fails to address: How can natural selection give rise to distinct 
 species\, unable to interbreed\, when this reproductive failure can hardly
  be an advantage? To address this question\, I use simple models to explor
 e what happens when two genetically distinct populations or species come i
 nto contact and interbreed to form hybrids. Sometimes\, these hybrids can 
 do really well and even outcompete their parents in certain environments. 
 In other cases\, the hybrids may suffer from infertility or increased mort
 ality. Yet another possibility is that rare hybrid individuals facilitate 
 the exchange of advantageous genes between the parental lineages\, facilit
 ating their adaptation. Studying the interactions between genes\, I shed l
 ight on the probability of each of these outcomes and what they may tell u
 s about the history of the species from which these genes originate.
LOCATION:1 Newnham Terrace\, Darwin College
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