Open AccessGenetics of inbred Drosophila melanogaster XXV. Simultaneous tests of I‐inductivity and M‐type
Author(s) -
LÜNING K. G.
Publication year - 1990
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1990.tb00093.x
Subject(s) - drosophila melanogaster , biology , genetics , chromosome , inbred strain , line (geometry) , recombination , gene , mathematics , geometry
L üning , K.G.1 990. Genetics of inbred Drosophilu melunoguster . XXV. Simultaneous tests of I‐inductivity and M‐type. — Hereditas 113: 271–275. Lund, Sweden. ISSN 0018–0661. Received August 13, 1990. Accepted September 21, 1990 From a branch of an inbred line of Drosophila melanogaster we introduced the genome into cytoplasms from various sources. Among a pair of sister‐lines, which at first showed R‐type in the I‐R system, one line switched to I‐type. From a branch of this I‐type line, for several generations kept at 18°C. we established sub‐lines derived from four single females. They were propagated at 25°C with 14 or 28‐day generation interval, respectively. It was presumed that 14‐day generation interval gave strong, and 28 days interval gave weak R‐elements. Tests of the strength of the I‐inductivity disclosed no relation to the assumed strength of the R‐elements. — By the same test technique, primary non‐disjunction and chromosome loss, the M‐type was studied in the eight sub‐lines. There appeared diversitites in the M‐type, assumed to be related to chromosomal mutations. Both primary non‐disjunction and chromosome loss were affected by the P‐M reaction.