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  5 September 2000 © 1996, 1997, 1998, 1999, 2000
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 Fadjar's
Rainlilies
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Joel's Rose Finder |
Belladonna News 
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Teas & Chinas
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Rose Gallery
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Some of Mine
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 Ralph Moore |
Read the
book Don't wait for the movie |
Genetic Polymorphism E. B. Ford |
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Curtis' Botanical Magazine |
A Cytophysiological Theory of the Gene, Gene Mutation and Position Effect J. A. Serra |
Winter
Blossoms A. W. Darnell (1926) |
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| Other Sites of Interest | |
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Some Russian
Amaryllis
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| Epigenetics is the study of heritable changes in gene expression
that occur without a change in DNA sequence. ... Recent discoveries link
the recognition of nucleic acid sequence homology to the targeting of DNA
methylation, chromosome, and RNA turnover.— Wolffe & Matzke,
(Science, 15 Oct 1999) | |
Albert Einstein, 1954 Scientists generally have little historical sense, so that
each single generation knows little of the struggles and inner difficulties
of the former generation. Thus it happens that many ideas at different
times are repeatedly conceived anew, without the initiator knowing that
these subjects had been considered already before.
J.A.
Serra Pure
position effects are ... "genes in the making", essays of creation of
new hereditary units capable of self-perpetuation and of modifying the
properties of the species.
Cytophysiological Theory, 1949 |
Donald Forsha Jones ... when
deficient or excessive ratios are obtained, they have been obscured by the
prevalent practice of compiling data from many individuals of different
pedigree and in successive generations in order to obtain as large numbers
as possible. This procedure serves its purpose well. The thoroughgoing
Mendelianist seldom fails to obtain "very good ratios." Meanwhile the
factors which control the growth of the gametophyte generation in the
higher plants have not received the attention they deserve considering the
fact that they influence in a measurable degree the way in which inherited
characters are recombined.
Selective Fertilization, 1928 |
E. B. Ford The evolution of
super-genes, whether consisting of a few closely linked loci or of an
inversion, should always be...treated as one of the fundamental properties
of genetics.Genetic Polymorphism, 1965 Cryptic polymorphism in other animals and in plants may be revealed not only by placing them in an unusual external environment but by studying individuals possessing an exceptional gene-complex, especially when arising from the hybridization of distinct races or species. |
Darlington & Mather Plant and animal breeding
and evolution suggest that the changes which are constructive in the sense
of being new adaptations are of polygenic origin. The major
discontinuities used in mendelian experiment, on the other hand, are
largely destructive.Elements of Genetics, 1969 |
 Other Rose Links |
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 Rose Hybridizing |
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