HETEROCHROMATIC B-CHROMOSOMES IN ANTHOXANTHUM
نویسندگان
چکیده
منابع مشابه
Eu-heterochromatic rearrangements induce replication of heterochromatic sequences normally underreplicated in polytene chromosomes of Drosophila melanogaster.
In polytene chromosomes of D. melanogaster the heterochromatic pericentric regions are underreplicated (underrepresented). In this report, we analyze the effects of eu-heterochromatic rearrangements involving a cluster of the X-linked heterochromatic (Xh) Stellate repeats on the representation of these sequences in salivary gland polytene chromosomes. The discontinuous heterochromatic Stellate ...
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متن کاملHeterochromatic DNA sequences in the polytene chromosomes of Drosophila melanogaster salivary glands
The term ‘heterochromatin’ denotes chromosomal regions that remain condensed throughout most of the cell cycle, show late replication during normal cell cycles, under-replication in polytene chromosomes, extremely low gene density and high density of repeated sequences. Heterochromatin is characterized by modified histones H3 and H4 and high regularity of nucleosomes (reviewed by Gatti and Pimp...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2010
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1947.tb02804.x