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==Fig. 49. Diagram to illustrate crossing-over==
==Fig. 49. Diagram to illustrate crossing-over==


The two mutant characters, black and vestigial, are linked, as are  
The two mutant characters, black and vestigial, are linked, as are their normal allelomorphs, gray and long. A black vestigial male is mated to a gray long female. The F<sub>1</sub> female is back -crossed to the double recessive type, black vestigial. Four kinds of offspring are produced.  
their normal allelomorphs, gray and long. A black vestigial  
male is mated to a gray long female. The F^ female is  
back -crossed to the double recessive type, black vestigial.  
Four kinds of offspring are produced.  




Latest revision as of 11:55, 23 October 2014

Fig. 49. Diagram to illustrate crossing-over

The two mutant characters, black and vestigial, are linked, as are their normal allelomorphs, gray and long. A black vestigial male is mated to a gray long female. The F1 female is back -crossed to the double recessive type, black vestigial. Four kinds of offspring are produced.


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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Evolution and Genetics: 1 Different Kinds of Evolution | 2 Four Great Historical Speculations | 3 Evidence for Organic Evolution | 4 Materials of Evolution | 5 Mendel's Two Laws of Heredity | 6 Chromosomes and Mendel’s Two Laws | 7 Linkage Groups and the Chromosomes | 8 Sex-Linked Inheritance | 9 Crossing-over | 10 Natural Selection and Evolution | 11 Origin of Species by Natural Selection | 12 Non-Inheritance of Acquired Characters | 13 Human Inheritance | Figures

Reference

Morgan, T. H. (1925). Evolution and genetics. Princeton: Princeton University Press.


Cite this page: Hill, M.A. (2024, May 4) Embryology Morgan 1925 fig49.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Morgan_1925_fig49.jpg

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