Sex-linked Inheritance in Drosophila

Sex-linked Inheritance in Drosophila

Sex-linked Inheritance in DrosophilaAlthough the ratio of 3 to 1 in which contrasted characters reappear in the...
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¥2,146 JPY
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SKU: gb-34368-ebook
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Author: Bridges, Calvin B. (Calvin Blackman),1889-1938
Format: eBook
Language: English
Subtotal: ¥1,073
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Sex-linked Inheritance in Drosophila

Sex-linked Inheritance in Drosophila

¥2,146 ¥1,073

Sex-linked Inheritance in Drosophila

¥2,146 ¥1,073
Author: Bridges, Calvin B. (Calvin Blackman),1889-1938
Format: eBook
Language: English

Sex-linked Inheritance in Drosophila

Although the ratio of 3 to 1 in which contrasted characters reappear in the second or F2 generation is sometimes referred to as Mendel's Law of Heredity, the really significant discovery of Mendel was not the 3 to 1 ratio, but the segregation of the characters (or rather, of the germinal representatives of the characters) which is the underlying cause of the appearance of the ratio. Mendel saw that the characters with which he worked must be represented in the germ-cells by specific producers (which we may call factors), and that in the fertilization of an individual showing one member of a pair of contrasting characters by an individual showing the other member, the factors for the two characters meet in the hybrid, and that when the hybrid forms germ-cells the factors segregate from each other without having been contaminated one by the other. In consequence, half the germ-cells contain one member of the pair and the other half the other member. When two such hybrid individuals are bred together the combinations of the pure germ-cells give three classes of offspring, namely, two hybrids to one of each of the pure forms. Since the hybrids usually can not be distinguished from one of the pure forms, the observed ratio is 3 of one kind (the dominant) to 1 of the other kind (the recessive). ......Buy Now (To Read More)

Product details

Ebook Number: 34368
Author: Bridges, Calvin B. (Calvin Blackman)
Release Date: Nov 18, 2010
Format: eBook
Language: English

Contributors

Contributor (Author): Morgan, Thomas Hunt, 1866-1945


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