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embryogenesis

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Journal Articles
The American Biology Teacher. 2018; 808561–569 doi: https://doi.org/10.1525/abt.2018.80.8.561
Published: 01 October 2018
... genetic modifications cause giraffe neck vertebrae to lengthen, in comparison to their ancestors, during embryogenesis?” This approach allows us to investigate a wide variety of previously less tractable problems, including changes in developmental gene regulation ( Carroll, 2008 ), the origin of...
Journal Articles
The American Biology Teacher. 2017; 798645–653 doi: https://doi.org/10.1525/abt.2017.79.8.645
Published: 01 October 2017
... of a living embryo is possible even at the early stages of embryogenesis. With the aid of a dissecting microscope, the key stages of heart development and the circulatory patterns can be observed in vivo , even when the chicken embryo is still attached to the yolk. Another advantage to using the...
Journal Articles
The American Biology Teacher. 2010; 725313–314 doi: https://doi.org/10.1525/abt.2010.72.5.12
Published: 01 May 2010
...: chowell@lhup.edu . 4 e-mail: jhowell@psu.edu . Embryogenesis vertebrate development modeling body axes cross section hands-on activity Blue, red, yellow, and green clay or Play-Doh ®® Rolling pins (e.g., 10-cm lengths of dowel) Stiff wire (∼∼20-cm lengths) References...
Journal Articles
The American Biology Teacher. 2015; 779710–711 doi: https://doi.org/10.1525/abt.2015.77.9.12
Published: 01 November 2015
... adult stages of lower organisms during embryogenesis. Haeckel used his famous lithographic plates, comparing embryos of different phyla, to illustrate his idea of recapitulation, but embryologists such as Ludwig Rütimeyer and Wilhelm His publicly criticized Haeckel for mislabeling and for drawing his...
Journal Articles
The American Biology Teacher. 2015; 77299–106 doi: https://doi.org/10.1525/abt.2015.77.2.4
Published: 01 February 2015
... embryogenesis of a direct-developing salamander, Plethodon cinereus. Evolution, 66 , 252–262. Koop, C.E. & Schaeffer, F.A. (1987). Whatever Happened to the Human Race? Wheaton, IL: Crossway. Liman, E.R. & Innan, H. (2003). Relaxed selective pressure on an essential component of pheromone...
Journal Articles
The American Biology Teacher. 2012; 749636–643 doi: https://doi.org/10.1525/abt.2012.74.9.7
Published: 01 November 2012
.... & Butcher, J.T. (2010). An ex-ovo chicken embryo culture system suitable for imaging and microsurgery applications. Journal of Visualized Experiments , 44 , e2154. Zile, M.H. (2010). Vitamin A – not for your eyes only: requirement for heart formation begins early in embryogenesis. Nutrients , 2 , 532...
Journal Articles
The American Biology Teacher. 2010; 726384 doi: https://doi.org/10.1525/abt.2010.72.6.14
Published: 01 August 2010
... always exist in a new environment. Minelli would like researchers to view the entire life cycle of an organism, and not just embryogenesis, as one of development. He believes that in focusing only on the final adult forms (adultocentrism) it becomes ““exceedingly easy to adopt a deterministic view of...
Journal Articles
The American Biology Teacher. 2007; 693135–136 doi: https://doi.org/10.2307/4452118
Published: 01 March 2007
... evidence for phylogeny (Haeckel's term) largely based on von Baer's observations (Gould, 1977; Minkoff, 1983; Pickett et al., 2005); wheth- er von Baer believed in evolution or not, his statements on embryogenesis are compatible with it (Raff, 1996). Darwin (1859), 1st edition of Origin, didn't directly...
Journal Articles
The American Biology Teacher. 2007; 692109–112 doi: https://doi.org/10.2307/4452107
Published: 01 February 2007
... embryogenesis in this species. The reasons that the sea urchin is attractive for transcriptome research are the same reasons as to why it was attractive to 19th century embryologists: Early development is rapid and rather simple. By 48 hours after fertil- ization, the embryo is in the late gastrula stage, with...
Journal Articles
The American Biology Teacher. 2004; 66157–63 doi: https://doi.org/10.2307/4451618
Published: 01 January 2004
...Paul J. Ogren; Michael Deibel; Ian Kelly; Amy B. Mulnix; Charlie Peck Copyright National Association of Biology Teachers References Abrams, J. M., White, K., Fessler, L. 1. & Steller, H. (1993). Programmed cell death during Drosophila embryogenesis. Development, 117. Abrams 117...
Journal Articles
The American Biology Teacher. 1998; 604265–268 doi: https://doi.org/10.2307/4450469
Published: 01 April 1998
... essential components of modes of inquiry for grades 9-12. Use of Case Studies in Plant Tissue Culture Plant Tissue Culture is a two-credit course consist- ing of one lecture and three laboratory hours each week. Basic plant tissue culture techniques such as callus and cell culture, embryogenesis...
Journal Articles
The American Biology Teacher. 1996; 582111–113 doi: https://doi.org/10.2307/4450090
Published: 01 February 1996
.... Campbell 3 Statistics for biologists 1989 Dos Santos, A.V.P., Outka, D.E., Cocking, E.C. & Davey, M.R. (1980). Organogenesis and somatic embryogenesis in tissues derived from leaf protoplasts and leaf ex- plants of Medicago sativa. Zeitschrift fuer Pflanzenphysiologie, 99, 261-270. Dos...
Journal Articles
The American Biology Teacher. 1995; 575308–312 doi: https://doi.org/10.2307/4449999
Published: 01 May 1995
...; systole/diastole) 4. Consecutive diagrams (e.g. suc- cession, muscle contraction, facil- itated diffusion) 5. Animated graphics (e.g. tran- scription, protein synthesis, gas- trulation, gene cloning) 6. Movies (e.g. cytoplasmic stream- ing, mitosis, embryogenesis, in- terviews with eminent biolo- gists...
Journal Articles
The American Biology Teacher. 1994; 566348–352 doi: https://doi.org/10.2307/4449850
Published: 01 September 1994
... stu- Excitement is Real World Plant Biotech In New Books by Carl Tant Plant Biotech Lab Manual ISBN 1-880319-03-9 Comb bound 5.5"x 8.5" $19.95 Extensive background descriptions plus twelve experiments Include Embryogenesis, Androgenesis, Phytochemicals, Protoplast Fusion, Cell Cultures, and more, No...
Journal Articles
The American Biology Teacher. 1993; 553170–172 doi: https://doi.org/10.2307/4449617
Published: 01 March 1993
... such as organogenesis, embryogenesis and shoot tip culturing. However, it also includes specialized techniques such as protoplast fusion and genetic transformation used for production of new plant varieties. This is why it has developed into a "valid botanical dis- cipline" (Bottino 1981) and is consid...
Journal Articles
The American Biology Teacher. 1993; 556326–329 doi: https://doi.org/10.2307/4449675
Published: 01 September 1993
... de Beer, taken out of context, which only implies some de- gree of variation of embryogenesis, in an obvious attempt to discredit the whole concept of homology. It is curious how they choose two human structures to use as examples of supposed misuse of the idea of vestigial organs, i.e. the appendix...
Journal Articles
The American Biology Teacher. 1989; 513165–167 doi: https://doi.org/10.2307/4448885
Published: 01 March 1989
.... in biology from Waynesburg College, a M.S. in fruit crops from the University of Florida and a Ph.D. in horticulture from Purdue University. She is a member of ASHS, TCA, AAAS and Sigma Xi. CARROT ROOTS 165 Table 1. Culture media used for carrot callus initiation, maintenance and embryogenesis...
Journal Articles
The American Biology Teacher. 1991; 538500–503 doi: https://doi.org/10.2307/4449378
Published: 01 November 1991
... give students a better understanding of embryogenesis; it would utilize ex- isting software on pattern develop- ment. The cell biologists planned to build scale models of subcellular struc- tures and then write up directions on how these could be made by students. That left five people, including my...
Journal Articles
The American Biology Teacher. 1990; 522121–122 doi: https://doi.org/10.2307/4449054
Published: 01 February 1990
... designed kits for a class of 30 make it easy for all teachers to lead their classes to a thinking, motivating, up-to-date plant lab experience with Androgenesis Protoplast Fusion Embryogenesis Safe Medicinal Extractions AND NOW: Blood Agglutination with NO AIDS RISK. Use plant lectins to identify animal...
Journal Articles
The American Biology Teacher. 1990; 52140–46 doi: https://doi.org/10.2307/4449022
Published: 01 January 1990
... leaves; beginning of internode elongation. Days 10-12: continued elongation of internodes; expansion of leaves and enlargement of flower buds. Days 13-17: opening of flowers; pollination. Days 18-38: pod elongation and swelling; embryogenesis; drying and harvest of seeds. FAST PLANTS 41 Table 1. B. rapa...