Location of factors enhancing crossing over on linkage group I of Neurospora
نویسندگان
چکیده
منابع مشابه
Crossing-over and interference in the centromere region of linkage group I of Neurospora.
qWO previous studies have provided extensive tetrad data on crossing-over in the centromere region of linkage group I. LINDEGREN and LINDEGREN (1942) found an excess of multiple exchanges across the centromere. These multiple exchanges included a proportion of %strand pairs in excess of the 0.25 expected if all four chromatids participated in exchanges at random. Such a deviation might be attri...
متن کاملDouble Crossing over in Neurospora.
CROSSOVER involves exchange of genetic material between only two of the A four products of meiosis. We should like to know whether there are any special properties of these two strands of the tetrad which enable them to participate in crossing over. Such knowledge might help us understand the mechanics of the crossing over process and would perhaps shed some light on the physical nature of the ...
متن کاملGenetic factors influencing crossing-over frequency in Neurospora.
D I F F E R E N T crosses involving the same marked region in Neurospora crassa may yield markedly different frequencies of recombinants. It has been suggested that the fluctuations in recombination frequency result from inherent differences between the various wild-type strains from which the stocks descended (BARRATT 1954; FROST 1961). However, the nature of these differences and the ways in ...
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چکیده ندارد.
15 صفحه اولA Partial Map of Linkage Group D in Neurospora Crassa.
chromosomes are rather small, so it is quite likely that minor chromosome deficiencies or deletions would not be detected. Recently, we have obtained from commercial sources two spontaneous chromosome aberrants, one of which appears to be wholly tetraploid, while the other is chimaeric, containing diploid as well as tetraploid tissues. The first named is known to be, and the other probably is, ...
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ژورنال
عنوان ژورنال: Genetical Research
سال: 1973
ISSN: 0016-6723,1469-5073
DOI: 10.1017/s0016672300013367