This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...of the embryo, and to this extent may appear to influence the hereditary characters of the generation to which the embryo belongs. For instance, the females of certain races of silkworm moths have white eggs, because the shell is white. If such eggs are fertilized by sperm of another race, that has eggs with a dominant ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ...of the embryo, and to this extent may appear to influence the hereditary characters of the generation to which the embryo belongs. For instance, the females of certain races of silkworm moths have white eggs, because the shell is white. If such eggs are fertilized by sperm of another race, that has eggs with a dominant green colored shell, the shells are nevertheless white. Conversely when the green eggs of a female moth of the green egg race are fertilized by the sperm of a male of a white egg race, the. color remains green. When the moths develop from either of these two kinds of hybrid eggs, one white, one green, they lay only green eggs, because in the hybrid the factor for green dominates and determines the color of the shell that is produced in the new eggs. These green eggs give rise to moths, three of which lay eggs that are green to one that lays eggs that are white, showing that here there is only the ordinary case of Mendelian inheritance, which is obscured, however, when the characters of the young embryo are considered, because, as has been shown, these characters are due to peculiarities of the eggs before they are laid. The serosa on the other hand is a cellular membrane that develops around the embryo and produces pigment. The pigment seen through the shell gives the embryo a definite color, which in the hybrid embryo is characteristic of the maternal race. Since the serosa pigment is not present in the egg, but develops after fertilization the inheritance here appears to be determined by the character of the egg and not by the sperm. But the genetic history of this character of the embryo is apparently the same as that of the color of the shell or of the yolk. It can, therefore, be interpreted in the same way. There must, then, be present i...
Read Less
Add this copy of The Mechanism of Mendelian Heredity to cart. $19.72, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Mechanism of Mendelian Heredity (Paperback Or to cart. $24.17, new condition, Sold by BargainBookStores rated 3.0 out of 5 stars, ships from Grand Rapids, MI, UNITED STATES, published 2016 by Wentworth Press.
Add this copy of The Mechanism of Mendelian Heredity to cart. $29.16, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Mechanism of Mendelian Heredity to cart. $49.53, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2012 by Hardpress Publishing.
Add this copy of The Mechanism of Mendelian Heredity to cart. $63.34, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2022 by Legare Street Press.
Add this copy of The Mechanism of Mendelian Heredity to cart. $65.94, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2022 by Legare Street Press.
