The Third And Fourth Generation; An Introduction to Heredity
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In our eReader you can find the full English version of the book. Read The Third And Fourth Generation; An Introduction to Heredity Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Third And Fourth Generation; An Introduction to Heredity
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To quickly assess the difficulty of the text, read a short excerpt:
But the breeders went to work by a pro- cess of hybridization and selection, based on Mendel's law, to unite the needed qualities in one variety, and they succeeded so weU that in three years' time they could begin to send the farmers small amounts of seed that met the re- quirements. Now these great prairie provinces are producing regular and dependable crops.
It was long taken for granted that improve- ment could be effected in a herd of animals or a plant crop by selecting from the general r...un of individuals the best ones to use for continued propagation. Thus the farmer went through his field at harvest time and picked out the largest heads of grain and those with the heaviest kernels to use as seed for the ensuing year, hoping that this process, repeated year after year, would increase the yield of his land- The chicken fancier selected the hens that produced the largest number of eggs to use as breeders, in the hope that the egg production of the flock would gradually rise. But this sort of mass breeding was found to yield very unsatisfactory results.
What to read after The Third And Fourth Generation; An Introduction to Heredity?
You can find similar books in the "Read Also" column, or choose other free books by Elliot Rowland Downing to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
But the breeders went to work by a pro- cess of hybridization and selection, based on Mendel's law, to unite the needed qualities in one variety, and they succeeded so weU that in three years' time they could begin to send the farmers small amounts of seed that met the re- quirements. Now these great prairie provinces are producing regular and dependable crops.
It was long taken for granted that improve- ment could be effected in a herd of animals or a plant crop by selecting from the general r...un of individuals the best ones to use for continued propagation. Thus the farmer went through his field at harvest time and picked out the largest heads of grain and those with the heaviest kernels to use as seed for the ensuing year, hoping that this process, repeated year after year, would increase the yield of his land- The chicken fancier selected the hens that produced the largest number of eggs to use as breeders, in the hope that the egg production of the flock would gradually rise. But this sort of mass breeding was found to yield very unsatisfactory results.
What to read after The Third And Fourth Generation; An Introduction to Heredity?
You can find similar books in the "Read Also" column, or choose other free books by Elliot Rowland Downing to read onlineMoreLess
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