All vertebrate embryos follow a common developmental path due to their common ancestry. All have a set of very similar genes (the homeobox genes) that define their basic body plan. As they grow, the ...
The present theory offers a unified solution to three closely related evolutionary problems. (1) Why does an evolving population explore only a small fraction of the accessible pathways in genotype ...
VERTEBRATE ZOOLOGY AN INTRODUCTION TO THE COMPARATIVE ANATOMY EMBRYOLOGY AND EVOLUTION OF CHORDATE ANIMALS BY GR DE BEER WITH AN INTRODUCTION BY JULIAN S HUXLEY ...
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!352600~!0#focus ...
THE appearance of Balfour's great work on comparative embryology in 1880 marked an epoch in the history of zoology. Since then not only has a vast quantity of new information been acquired, but whole ...
IN the history of angiosperm embryology there have been three distinct periods: the first, in which the chief aim was to unravel the chief facts regarding the development of the pollen and embryo sac, ...
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