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Segregational Load In Drosophila Kikkawai. Iii. Natural Populations by Newton Freire-Maia; Ademar Freire-Maia is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Segregational Load In Drosophila Kikkawai. Iii. Natural Populations about?

ATURAL populations of D. kikkawai Burla (previously cited as D. montium N d e Meijere) present three different types of polymorphism: (1) a polymorphism (associated with a sexual dimorphism) involving color and pattern of abdominal tergites; (2) a chromosomal polymorphism expressed in a long paracentric inversion in the left arm of chromosome 11; (3) a chromosome heteromorphism in consequence of the mitotic chromosome IV being found both as metacentric and as acrocentric. With respect to color and pattern of abdominal tergites, two genetically pure forms (light and dark) have been isolated. Crossing experiments showed that a single pair of autosomal alleles is mainly responsible for the differences between them, with dark pigmentation dominant. The two color forms are easily distinguished among females, but with difficulty among males. (For data, see FREIRE-MAIA 1964a,b.) In this paper, data on the color polymorphism and on the inversion polymorphism in natural populations will be presented and discussed. The problem of the chromosome heteromorphism will be only briefly touched, since no quantitative information was obtained concerning it.

Who reads Segregational Load In Drosophila Kikkawai. Iii. Natural Populations?

Author

Newton Freire-Maia; Ademar Freire-Maia

Publisher

Oxford University Press (OUP)

Published

1964

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)