div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 8button div class=ts-image amp-img class=ts-thumb alt=Page 8: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails8jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 9button div class=ts-image amp-img class=ts-thumb alt=Page 9: ctlyaleeduTHEODOSIUS DOBZHANSKY AND OLGA PAVLOVSKY chromosomes of Drosophila pseudoob- scura were used Severe limitation of the population sizes was introduced in some of the src=https:reader034vdocumentsmxreader034viewer20220421175e95e9ab0f8f7f643845628ahtml5thumbnails9jpg width=142 height=106 layout=responsive amp-img divdiv