By Rudolf A. Raff
Rudolf Raff is well-known as a pioneer in evolutionary developmental biology. of their 1983 booklet, 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 examine questions, hypotheses, and techniques to lead 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 1000000000 years in the past. Evolution inside of those physique plans in this span of time has ended in the super range of residing animal forms.Raff argues for an built-in method of the research 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 parts, but additionally paleontologists, zoologists, morphologists, molecular biologists, and geneticists.
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Extra resources for The Shape of Life: Genes, Development, and the Evolution of Animal Form
A s n e w sea f l o o r i s f o r m e d , i t pushes the c o n t i n e n t s farther a w a y f r o m the s p r e a d i n g c e n t e r . A t c o n v e r g e n t b o u n d a r i e s s u b d u c t i n g slabs o f the E a r t h ' s crust pull the plates w i t h t h e i r floating landmasses d o w n a l o n g b e h i n d t h e m . I t i s a s i f the c o n t i nents are on c o n v e y o r belts. I t s o h a p p e n s that the m o v e m e n t o f c o n t i n e n t s can b e t r a c e d back i n t i m e using t h e m a g n e t i c signal p r e s e r v e d i n t h e r o c k s o f the o c e a n f l o o r .
M i g e o d . H e had A f r i c a n e x p e r i e n c e f r o m his civil s e r v i c e b a c k g r o u n d , b u t h e w a s n o t a p a l e o n t o l o g i s t . I n 1 9 3 0 M i g e o d and a n assistant, Rex e x p l o r a t o r y side t r i p Parrington, a y o u n g C a m b r i d g e student, made an f r o m Tendaguru to Nyasaland to d e t e r m i n e if bones r e p o r t e d f r o m the n o r t h w e s t e r n s h o r e o f L a k e N y a s a , Livingstone's lake, w e r e like t h o s e o f T e n d a g u r u .
In this sense t h e r e is a p r o g r e s s i o n , b u t o n l y v e r y g e n e r a l l y . T h i s i s n o t t o say that f i s h and r e p t i l e s and i n v e r t e b r a t e s are n o t s o p h i s t i c a t e d . T h e y o b v i o u s l y a r e , h a v i n g e v o l v e d along their o w n evolutionary pathways. T h e y live as m e m b e r s of complicated e c o l o g i c a l c o m m u n i t i e s that h a v e c h a n g e d w i t h t i m e . C o m p a r e , f o r instance, t h e d i n o s a u r - d o m i n a t e d landscapes o f t h e M e s o z o i c w i t h t h e m a m m a l - d o m i nated communities of today.
The Shape of Life: Genes, Development, and the Evolution of Animal Form by Rudolf A. Raff