By Rudolf A. Raff
Rudolf Raff is well-known as a pioneer in evolutionary developmental biology. of their 1983 ebook, Embryos, Genes, and Evolution, Raff and co-author Thomas Kaufman proposed a synthesis of developmental and evolutionary biology. within the form of existence, Raff analyzes the increase of this new experimental self-discipline and lays out new learn questions, hypotheses, and techniques to steer its development.Raff makes use of the evolution of animal physique plans to exemplify the interaction among developmental mechanisms and evolutionary styles. Animal physique plans emerged part one billion years in the past. Evolution inside those physique plans in this span of time has led to the super range of dwelling animal forms.Raff argues for an built-in method of the examine of the intertwined roles of improvement and evolution related to phylogenetic, comparative, and practical biology. This new synthesis will curiosity not just scientists operating in those components, but additionally paleontologists, zoologists, morphologists, molecular biologists, and geneticists.
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Additional info for The Shape of Life: Genes, Development, and the Evolution of Animal Form
Example text
Diatom assemblage composition and environmental significance of the two samples collected by Frenguelli (1935) at Mar Chiquita coastal lagoon Abundant species Frequent species Ecological Conditions Bottom sample Paralia sulcata Actinocyclus vulgaris Marine/neritic assemblage. Fossil and reworked, probably indicating the presence of a marine bay in the past. Plankton net sample -----------Aulacoseira granulata Bacillaria paradoxa Cyclotella meneghiniana Navicula peregrina Nitzschia circumsuta Tropidoneis lepidoptera var.
Sigma var. ) Amphora perpusilla Epitemia adnata Staurosira construens Aulacoseira italica Nitzschia frustulum Rhopalodia gibba Achnanthes brevipes var. intermedia Planothidium delicatulum Gyrosigma spenceri var. exilis Nitzschia clausii Nitzschia sigma var. rigida Epiphytes under macroalgae (Stipocaulon sp. ) - Encyonema turgidum Epithemia adnata - Cyclotella baltica Gyrosigma balticum Bacillaria paradoxa B. paradoxa var. tropica Marine diatoms Gyrosigma balticum G. spenceri var. curvula G. wansbecki Tryblionella compressa Nitzschia sigma Surirella striatula Amphora granulata Auliscus sculptus Cocconeis scutellum C.
Costata Triceratium scitulum How Much Information About Ecological Requirements…? Table 8. Diatom assemblage composition of the samples from Río Grande estuary, according to Cleve (1900) Marine and brackish taxa Freshwater taxa Actinoptychus undulatus Amphora lineolata Biddulphia aurita Amphora pediculus Cymbella aspera Frustulia rhomboides Biddulphia rhombus Hantzschia elongata Cocconeis scutellum var. genuina Melosira sp. Coscinodiscus decipiens Neidium oblique striatum var. magellanicum Coscinodiscus excentricus Pinnularia borealis Coscinodiscus oliverianus Pinnularia commutata Entyopyla incurvata Pinnularia elliptica Epithemia musculus Pinnularia gibba Hantzschia virgata Pinnularia lata Hyalodiscus radiates Pinnularia latevittata Hyalodiscus scoticus Pinnularia gibba var.