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Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi
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| Zeitschriftentitel: | Journal of the Marine Biological Association of the United Kingdom |
|---|---|
| Personen und Körperschaften: | , |
| In: | Journal of the Marine Biological Association of the United Kingdom, 11, 1916, 1, S. 18-51 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
|
| Schlagwörter: |
| author_facet |
Sexton, E. W. Wing., M. B. Sexton, E. W. Wing., M. B. |
|---|---|
| author |
Sexton, E. W. Wing., M. B. |
| spellingShingle |
Sexton, E. W. Wing., M. B. Journal of the Marine Biological Association of the United Kingdom Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi Aquatic Science |
| author_sort |
sexton, e. w. |
| spelling |
Sexton, E. W. Wing., M. B. 0025-3154 1469-7769 Cambridge University Press (CUP) Aquatic Science http://dx.doi.org/10.1017/s0025315400007256 <jats:p>1. Twenty-one thousand, five hundred and fourteen (21,514) amphipods of the species Gammarus chevreuxi Sexton have been examined for eyecolour, 21.302 referred to in this paper, and 212 in other experiments, not included.</jats:p><jats:p>2. The normal eye-colour of this species is black, with a superficial reticulation of opaque white pigment.</jats:p><jats:p>3. The pigmentation of the eye is very variable within limits. Eyes have been observed either partially or entirely lacking in the coloured pigment of the retinular cells, or with either a partial or entire lack, or else an excess of the opaque white pigment.</jats:p><jats:p>4. The red strain appears to have arisen as a “sport” in the second generation of offspring of the first animals captured. No red-eyed animals have yet been found in natural conditions, although many thousands have been brought in from time to time and examined. Those counted for the purpose while the work for this paper was in progress numbered 8697, but this figure does not include the many thousands previously observed. Experiments have been made repeatedly with a view of getting the Red strain again from the Pure Black, but with no success.</jats:p> Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod <i>Gammarus chevreuxi</i> Journal of the Marine Biological Association of the United Kingdom |
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Journal of the Marine Biological Association of the United Kingdom |
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| title |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_unstemmed |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_full |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_fullStr |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_full_unstemmed |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_short |
Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_sort |
experiments on the mendelian inheritance of eye-colour in the amphipod <i>gammarus chevreuxi</i> |
| topic |
Aquatic Science |
| url |
http://dx.doi.org/10.1017/s0025315400007256 |
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1916 |
| physical |
18-51 |
| description |
<jats:p>1. Twenty-one thousand, five hundred and fourteen (21,514) amphipods of the species Gammarus chevreuxi Sexton have been examined for eyecolour, 21.302 referred to in this paper, and 212 in other experiments, not included.</jats:p><jats:p>2. The normal eye-colour of this species is black, with a superficial reticulation of opaque white pigment.</jats:p><jats:p>3. The pigmentation of the eye is very variable within limits. Eyes have been observed either partially or entirely lacking in the coloured pigment of the retinular cells, or with either a partial or entire lack, or else an excess of the opaque white pigment.</jats:p><jats:p>4. The red strain appears to have arisen as a “sport” in the second generation of offspring of the first animals captured. No red-eyed animals have yet been found in natural conditions, although many thousands have been brought in from time to time and examined. Those counted for the purpose while the work for this paper was in progress numbered 8697, but this figure does not include the many thousands previously observed. Experiments have been made repeatedly with a view of getting the Red strain again from the Pure Black, but with no success.</jats:p> |
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| author | Sexton, E. W., Wing., M. B. |
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| description | <jats:p>1. Twenty-one thousand, five hundred and fourteen (21,514) amphipods of the species Gammarus chevreuxi Sexton have been examined for eyecolour, 21.302 referred to in this paper, and 212 in other experiments, not included.</jats:p><jats:p>2. The normal eye-colour of this species is black, with a superficial reticulation of opaque white pigment.</jats:p><jats:p>3. The pigmentation of the eye is very variable within limits. Eyes have been observed either partially or entirely lacking in the coloured pigment of the retinular cells, or with either a partial or entire lack, or else an excess of the opaque white pigment.</jats:p><jats:p>4. The red strain appears to have arisen as a “sport” in the second generation of offspring of the first animals captured. No red-eyed animals have yet been found in natural conditions, although many thousands have been brought in from time to time and examined. Those counted for the purpose while the work for this paper was in progress numbered 8697, but this figure does not include the many thousands previously observed. Experiments have been made repeatedly with a view of getting the Red strain again from the Pure Black, but with no success.</jats:p> |
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| imprint_str_mv | Cambridge University Press (CUP), 1916 |
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| spelling | Sexton, E. W. Wing., M. B. 0025-3154 1469-7769 Cambridge University Press (CUP) Aquatic Science http://dx.doi.org/10.1017/s0025315400007256 <jats:p>1. Twenty-one thousand, five hundred and fourteen (21,514) amphipods of the species Gammarus chevreuxi Sexton have been examined for eyecolour, 21.302 referred to in this paper, and 212 in other experiments, not included.</jats:p><jats:p>2. The normal eye-colour of this species is black, with a superficial reticulation of opaque white pigment.</jats:p><jats:p>3. The pigmentation of the eye is very variable within limits. Eyes have been observed either partially or entirely lacking in the coloured pigment of the retinular cells, or with either a partial or entire lack, or else an excess of the opaque white pigment.</jats:p><jats:p>4. The red strain appears to have arisen as a “sport” in the second generation of offspring of the first animals captured. No red-eyed animals have yet been found in natural conditions, although many thousands have been brought in from time to time and examined. Those counted for the purpose while the work for this paper was in progress numbered 8697, but this figure does not include the many thousands previously observed. Experiments have been made repeatedly with a view of getting the Red strain again from the Pure Black, but with no success.</jats:p> Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod <i>Gammarus chevreuxi</i> Journal of the Marine Biological Association of the United Kingdom |
| spellingShingle | Sexton, E. W., Wing., M. B., Journal of the Marine Biological Association of the United Kingdom, Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi, Aquatic Science |
| title | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_full | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_fullStr | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_full_unstemmed | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_short | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| title_sort | experiments on the mendelian inheritance of eye-colour in the amphipod <i>gammarus chevreuxi</i> |
| title_unstemmed | Experiments on the Mendelian Inheritance of Eye-colour in the Amphipod Gammarus chevreuxi |
| topic | Aquatic Science |
| url | http://dx.doi.org/10.1017/s0025315400007256 |