DOMINANT LETHAL AND INACTIVATION EFFECTS OF NITROGEN MUSTARD ON HABROBRACON SPERM
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چکیده
منابع مشابه
Dominant Lethal and Inactivation Effects of Nitrogen Mustard on Habrobracon Sperm.
S early as 1911 0. HERTWIC demonstrated two types of behavior of irA radiated Amphibian sperm. One of these, the dominant lethal effect, resulted in death of embryos due to fusion of injured sperm nucleus with egg nucleus. The other, inactivation of sperm, stimulated the egg to develop gynogenetically since injured sperm entered it but took no part in development. PACKARD (1914) observed, in ad...
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ULLER in 1927 stated that the “partial sterility” of X-rayed males M of Drosophila wasdue,at least to an appreciable extent, to dominant lethal changes induced in the sperm. It was impossible, however, to determine whether the eggs were actually “fertilized.” In Drosophila the result would be the same; the eggs would fail to develop, whether dominant lethals were induced or the sperm were inact...
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HEN Habrobracon eggs are X-rayed at metaphase I and subsequently fertiw l i z e d , the decreased hatchability is attributed to dominant lethal mutation, in the same sense in which the term is used when sperm are irradiated. This is justified by WHITING'S demonstration (1946, 1948, 1949, 1950, 1955) that cytoplasmic injury is not lethal a t the doses employed. In unfertilized eggs, which develo...
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HITING (1945), working on the parasitic wasp Habrobracon, developed a timing method that distinguished oocytes irradiated in the first meiotic metaphase (metaphase I) from those irradiated in the first meiotic prophase (prophase I) . She used embryo lethality of X-irradiated eggs from diploid virgins, which measured mostly dominant lethality, and found that metaphase I oocytes are approximately...
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ژورنال
عنوان ژورنال: Genetics
سال: 1954
ISSN: 1943-2631
DOI: 10.1093/genetics/39.3.317