以往的一年半中,生物化学的几个领域进展十分显著。这主要是指:基因中夹入序列(intervening Sequences)的发现;为使基因从一种生物转移至另一种生物的研究使重组DNA和细胞融合操作技术获得了很大进展:各种物理方法,特别是核磁共振和X-射线衍射得到广泛应用。看来,似乎只有那些有明显细胞核的较高等生物的基因具有夹入序列,后者也叫“夹入 In the past year and a half, progress in several areas of biochemistry has been remarkable. This mainly refers to: the discovery of intervening sequences in genes; great advances have been made in the technique of recombinant DNA and cell fusion for the study of gene transfer from one organism to another: various physical methods , Especially nuclear magnetic resonance and X-ray diffraction are widely used. It seems that only the genes of the higher organisms with obvious nuclei seem to have pinch-in sequences, which are also called "pinch-in