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Three types of silkworm genome comparative analysis of

And conclusions for this view of the hope that the chromosome of silkworm colleagues to identify and group-based comparisons, given adequate attention. As one of the characteristics of the relative length of chromosomes in the three groups no significant difference between type, indicating that most of chromosome relative length of the silkworm, is actually relatively stable and can be used as indicators of individual identification. However, due to continuous changes of silkworm showed chromosome length, with the exception of chromosome 3 l of a longer and larger differences between each other, relatively easy to distinguish chromosome 28 outside the adjacent 4-difference is very small, only an indicator of relative length difficult to accurately distinguish. So that the silkworm can be the relative length of chromosome 1-3 as a main indicator distinguishing, for 4-28 chromosome requires the effective use of bands and other indicators. Also pointed out that the establishment of silkworm chromosome banding pattern mode, a wire should pay attention to the different times in different periods and decreases in comparison with the type of reference. Atypia of the female silkworm chromosomes, Japan and scholars from the early embryonic cell karyotype analysis of early and mid-silk was confirmed in LI. As for the subtraction and type in the sc group failed to find it, may be subject to research methods and the limited level of awareness. In this regard, the same type of decision for the ZW chromosomes of birds, has provided very useful inspiration. Solarl so found, and the mammalian XY chromosome pairing behavior is not completely different, has been studied in birds,[link widoczny dla zalogowanych], regardless of their z, W much difference between the length of chromosomes, through the joint adjustment pachytene,[link widoczny dla zalogowanych], so long will be the formation zw and fully matched hard to distinguish with the SC image autosomal; this so long zw-sc in sc unusual shade c pair accounted for more than 9o% full-length,[link widoczny dla zalogowanych], and only less than lO% of its part of both ends of the same shade �� ],[I believe that the theory of evolution from the analysis and the practical analysis of existing research data, you can expect the female silkworm ZW Specific details, such as whether it is reduced z-axis, w axis of elongation, or z axis winding around the w-axis distortion, or another other way, etc.,[link widoczny dla zalogowanych], are yet to be proven. The function of biological evolution from binding Principles, where the structure has important biological functions and behavior, has a very strong conservative. Gender differences are prevalent in eukaryotes, is very beneficial in evolutionary important traits. ZW same type of decisions for the birds and the silkworm, its molecular basis to the chromosome structure and behavior, must have a very high and the same shade c conservative. Every reason to believe that the early bird oocyte decreases in the ZW chromosomes of all the joint - the role of equal length of the subtrahend in Bombyx mori oocytes also exists,[link widoczny dla zalogowanych], and its mode of action of the specific details may be different. This is the basic law of life and exercise a high degree of uniformity and performance of a highly diverse forms of expression. In addition, the chromosomes from the existing data, in the female silkworm l mitotic chromosome number equal to the length of z 6.17%, the oocyte pachytene SC karyotype and the karyotype in the lane of the longest l The relative length of chromosome length, indicating that the latter two groups do next in the z chromosome shortening. This is precisely the Z chromosome of ZW shorter length of the role of the United first-class material change predicted. Therefore, the use of other new methods, further decreases in the identification of silk and z, w chromosome morphology, study their behavior in the cell the law proved its composition and on the biological function of genes is very significance.
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