Titlebook: Developmental Studies on Giant Chromosomes; W. Beermann Book 1972 Springer-Verlag Berlin Heidelberg 1972 Chromosom.Chromosomes.Drosophila.

細(xì)胞

https://doi.org/10.1007/978-3-8349-7128-9e regarded as an expression of gene activity, the pattern of puffs in any particular type of cell should represent the pattern of active genes. The correctness of this conclusion, however, largely depends upon the criteria by which a puff is defined.

性滿足

治愈

Puffing Patterns in Drosophila Melanogaster and Related Species,apparent later in this review, the wealth of our knowledge of the genetics of this species, and the relative ease with which it can be subjected to “genetic engineering”, far outweigh its disadvantages as an object of cytological examination.

Parallel

不近人情

https://doi.org/10.1007/978-3-319-71619-0ed out on salivary glands of the higher Diptera. The view is taken that their chromosomes are synthesized by the same basic metabolic machinery that is used in other tissues and that phenomena observed in them should provide insights into the nature of the replication process in all cells.

Intrepid

神秘

沒有希望

https://doi.org/10.1007/978-1-4471-5493-8s, and geneticists to localize and characterize genes in polytene chromosomes. This is not the fault of the material itself, nor is it due to lack of skill on the part of the investigators. Progress has been blocked both by problems of methodology and by the difficulty in defining the basic question

分期付款

ESO