Sterile Hybrids in Ferns: Characterization and Parentage Analysis, Slides of Biology

Download Sterile Hybrids in Ferns: Characterization and Parentage Analysis and more Slides Biology in PDF only on Docsity! On Sterile Hybrids 1. Inheritance of morphological characters 2. Using chromosome pairing to test ideas about hybrids. 3. Using isozymes and DNA sequences to characterize hybrid progenitors. 4. Limits to hybrid interaction. Docsity.com Polystichum braunii Docsity.com On Sterile Hybrids 1. Inheritance of morphological characters 2. Using chromosome pairing to test ideas about hybrids. 3. Using isozymes and DNA sequences to characterize hybrid progenitors. 4. Limits to hybrid interaction. Docsity.com If needed… a review of meiosis Docsity.com Figure 13.6 Overview of meiosis: how meiosis reduces chromosome number Docsity.com Polystichum concinnum X P. speciosissimum Docsity.com Isozyme markers of Polystichum concinnum (c) and P. speciosissimum (s) combine in their hybrid (x) . SkDH IDH Docsity.com Isozyme attacks, notably with phosphoglucoisomerase (PGI). Barrington, 1990 ®& Docsity.com Dryopteris marginalis - marginal woodfern Docsity.com Hybrid combinations In Dryopteris marginalis goldiana campyloptera intermedia carthusiana cristata Vermont species clintoniana m m m m Docsity.com On Sterile Hybrids 1. Inheritance of morphological characters 2. Using chromosome pairing to test ideas about hybrids. 3. Using isozymes and DNA sequences to characterize hybrid progenitors. 4. Limits to hybrid interaction. Docsity.com Using isozymes to discover the parentage of XDryostichum PGI Docsity.com IRREGULAR FRONDS Pleuroderris - irregular morphology in an intergeneric hybrid between Dictyoxiphium and Tectaria Docsity.com