. The physical basis of heredity . o the three or four resultmg cells (). The abnormal development of the whole egg thatgenerally follows might be ascribed to the irregular dis-tribution of chromosomes to different regions; for, quiteapart from the specific nature of each chromosome orgroup of chromosomes, the activity of one region beingquantitatively different from that of a correspondingregion in another part of the egg might be responsible forthe failure to develop normally. But Boveri went furtherin his analysis. He shook apart the three or four blasto-meres coming from dispermic eg
. The physical basis of heredity . o the three or four resultmg cells (). The abnormal development of the whole egg thatgenerally follows might be ascribed to the irregular dis-tribution of chromosomes to different regions; for, quiteapart from the specific nature of each chromosome orgroup of chromosomes, the activity of one region beingquantitatively different from that of a correspondingregion in another part of the egg might be responsible forthe failure to develop normally. But Boveri went furtherin his analysis. He shook apart the three or four blasto-meres coming from dispermic eggs (by using Herbstscalcium-free sea-water method), and compared the num- 214 PHYSICAL BASIS OF HEEEDITY ber that developed into normal plutei with the numberof plutei from one-fourth normally fertilized the latter a large proportion give rise to normalembryos, from the former normal embryos are greater rarity, Boveri thought safe to attribute tothe chromosomal deficiencies present in most of such iso-.
Size: 1574px × 1587px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectheredit, bookyear1919
