52개의 결과 중 1 - 5개
When we look to the individuals of the same variety or sub-variety of our older
cultivated plants and animals, one of the first points which strikes us, is, that they
generally differ much more from each other, than do the individuals of any one ...
... of the same family. If strange and rare deviations of structure are truly inherited,
less strange and commoner deviations may be freely admitted to be inheritable.
Perhaps the correct way of viewing the whole subject, would be, to look at ...
"When we look to the hereditary varieties or races of our domestic animals and
plants, and compare them with species closely allied together, we generally
perceive in each domestic race, as already remarked, less uniformity of character
... we compare the host of agricultural, culinary, orchard, and flower-garden races
of plants, most useful to man at different seasons and for different purposes, I or
so beautiful in his eyes, we must, I think, look further than to mere variability.
These varieties, moreover, will be often ranked by some authors as species. Look
at the common oak, how closely it has been studied ; yet a German author makes
more than a dozen species out of forms, which are very generally considered ...
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