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. 1919 Excerpt: ...each other in a way in which no other chromosomes differ. The recessive gene for white eyes (w) in Drosophila is carried by the X-chromosome. It is inherited in the following way (Fig. 69): When a male with white eyes (w) is mated to a red-eyed female (WW), the Fi sons and daughters have red eyes. When these are bred ...
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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. 1919 Excerpt: ...each other in a way in which no other chromosomes differ. The recessive gene for white eyes (w) in Drosophila is carried by the X-chromosome. It is inherited in the following way (Fig. 69): When a male with white eyes (w) is mated to a red-eyed female (WW), the Fi sons and daughters have red eyes. When these are bred to each other, all the daughters have red eyes (50 per cent.), half the sons have red eyes (25 per cent.) and half the sons have white eyes (25 per cent.). The ratio, irrespective of sex, is three red to one white, but the white-eyed flies are found only amongst the males. In the diagram (Fig. 69), the relation of these results to the sex-chromosomes is shown. The X-chromosome that carries the normal gene (wild type) which gives red eyes is indicated by W. The X-chromosome that carries the gene for white eyes is indicated by w. The rod with a bent end stands for the F-chromosome. The F1 daughters contain one of each kind of X-chromosome. The F, sons only one kind. The recombinations that give the F2 results are shown in the middle of the lower part of the diagram. Half of the females are seen to be homozygous1 for the wild-type gene (W). They should never transmit white eyes, and they do not. The other half of the females are heterozygous (Ww), and if mated to a white-eyed male should give 50 per cent. red-eyed males and females, and 50 per cent. white-eyed males and females. This they do. The red F2 sons (W) should never transmit white eyes, nor the white-eyed sons (w) transmit red eyes. These relations are also known to hold. The reciprocal cross (Fig. 70), viz., a white-eyed female (ww) to a red-eyed male (W) gives red-eyed daughters (wW) and white-eyed sons (w). If these F/s Fig. 69.--Cross between white-eyed male and a red-eyed female of t...
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Add this copy of The Physical Basis of Heredity to cart. $20.57, 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 Physical Basis of Heredity to cart. $22.84, poor condition, Sold by Anybook rated 4.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1919 by J. B. Lippincott Company.
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Seller's Description:
This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 650grams, ISBN:
Add this copy of The Physical Basis of Heredity to cart. $30.01, 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 Physical Basis of Heredity to cart. $32.92, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of The Physical Basis of Heredity to cart. $41.35, new condition, Sold by Media Smart rated 4.0 out of 5 stars, ships from Hawthorne, CA, UNITED STATES, published 2019 by Wentworth Press.
Add this copy of The Physical Basis of Heredity to cart. $42.59, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
