ISSN:
1573-6857
Keywords:
Drosophila
;
meiosis
;
recombination
;
spermatogenesis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Two meiotic genes from natural populations are described. A female meiotic mutation,mei(1)g13, mapped to 17.4 on the X chromosome, causes nondisjunction of all homologs except for the fourth chromosomes. In addition, it reduces recombination by 10% in the homozygotes and causes 18% increased recombination in the heterozygotes. A male meiotic mutation,mei-1223 m144 , is located on the third chromosome. Although this mutation causes nondisjunction of all chromosomes, each chromosome pair exhibits a different nondisjunction frequency. Large variations in the sizes of the premature sperm heads observed in the homozygotes may reflect irregular meiotic pairing and the subsequent abnormal segregation, resulting in aneuploid chromosome complements.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02424473
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