Heterosis - Open Access .click

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Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955
Abstract Appreciation of the practical value of hybrid vigour is as old as the mule, but its scientific investigation began only relatively recently. Vigour transcending that of the parents was observed in hybrids by a number of the early hybridizers and, indeed, Mendel himself records it as an incidental observation on his peas; but ...
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Heterosis and variability in the mouse

Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955
Abstract The relation between heterosis and variabihty discussed by previous speakers i well illustrated by an example in the mouse where the structure of the second thoracic vertebra (vertebra prominens) is very variable; it may have a broad spatulat spinous process (+ + +), a round rod-shaped one (+ +), a mere spike (+), or then may
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Heterosis in chromosome behaviour

Proceedings of the Royal Society of London. Series B - Biological Sciences, 1955
Abstract Most examples and measurements of heterosis are concerned with the more familiar features of the phenotype, with such characters as size and growth rate of the body or its outer parts. This account is concerned with less accessible, though not less important, parts of the phenotype, and describes heterosis as it is shown in ...
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Heterosis in Saccharomyces