In Our Time Hybrids
Oct 31, 2019
Tune in as Sandra Knapp, a tropical botanist, Nicola Nadeau, an evolutionary biologist, and Steve Jones, a genetics expert, explore the fascinating world of hybrids. They discuss how hybrids can arise naturally or through human intervention, including striking examples like butterflies and orchids. The implications for species classification and biodiversity are profound. They also touch on the alarming decline in wildlife due to environmental factors and the evolving challenges posed by climate change. Discover how hybridization offers new insights for adaptation and survival.
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Hybrids' Importance in Evolution
- Hybrids, once considered exceptions, are now recognized as vital to evolution.
- They challenge traditional species definitions and highlight the fluidity of species boundaries.
Impact of Molecular Genetics on Species Classification
- Linnaeus's species classification, based on observable traits, has been challenged by molecular genetics.
- Genetics revealed continuous variation and blurred species boundaries, making classification more complex.
Oxford Ragwort: A Hybrid Invader
- The Oxford ragwort, a common hybrid plant in Britain, exemplifies hybrid invasion.
- This hybrid originated from a cross between an Italian species and a native relative in the Oxford Botanic Gardens.