Abstract
Four supernumerary chromosome segments showing different locations in the chromosomes and different C-banding reactions are studied in three grasshopper species in relation with chiasma distribution in the bivalents which carry them. The presence of any of these extra segments leads to a chiasma redistribution in the carrier bivalents, so that such a chiasma is formed preferentially in the furthest chromosome regions from the extra segment. This effect of the four supernumerary segments is independent of both their location on the chromosome and their C-banding reaction.
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Camacho, J P M, and Cabrero, J. 1982. Supernumary segments in five species of grasshoppers (Orthoptera: Acridoidea). Genetica, 59, 113–117.
Camacho, J P M, Viseras, E, Navas, J, and Cabrero, J. 1984. C-heterochromatin content of supernumerary chromosome segments of grasshoppers: detection of an euchromatic extra segment. Heredity, 53, 167–175.
Fox, D P, Carter, K C, and Hewitt, G M. 1973. Giemsa banding and chiasma distribution in the desert locust. Heredity, 31, 272–276.
Garcia-Lafuente, R, Lopez-Fernandez, C, and Gosal Vez, J. 1983. Extra heterochromatin in natural populations of Gomphocerus sibiricus (Orthoptera: Acrididae) 2. Chiasma distribution in the M7 bivalent. Cytobios, 37, 149–155.
Hewitt, G M, and John, B. 1968. Parallel polymorphism for supernumerary segments in Chorthippus parallelus (Zetter-stedt) I. British populations. Chromosoma, 25, 319–342.
Hewitt, G M, and John, B. 1970. Parallel polymorphism for supernumerary segments in Chorthippus parallelus (Zetter-stedt) IV. Ashurst re-visited. Chromosoma, 31, 198–206.
John, B, and Hewitt, G M. 1966. A polymorphism for heterochromatic supernumerary segments in Chorthippus parallelus. Chromosoma, 18, 254–271.
John, B, and Hewitt, G M. 1969. Parallel polymorphism for supernumerary segments in Chorthippus parallelus (Zetter-stedt) III. The Ashurst population. Chromosoma, 28, 73–84.
Riva, E, Fox, D P, Giraldez, R, and Santos, J L. 1984. Chiasma frequency and distribution in the presence and absence of supernumerary chromosome segments in the grasshopper, Euchorthippus pulvinatus gallicus. Heredity, 53, 101–106.
Shaw, D D, Wilkinson, P, and Coates, D J. 1982. The chromosomal component of reproductive isolation in the grasshopper Caledia captiva II. The relative viabilities of recombinant and non-recombinant chromosomes during embryogenesis. Chromosoma, 86, 533–549.
Westerman, M. 1969. Parallel polymorphism for supernumerary segments in Chorthippus parallelus (Zetterstedt) II. French populations. Chromosoma, 26, 7–21.
Westerman, M. 1970. Parallel polymorphism for supernumerary segments in Chorthippus parallelus V. A new polymorphism in Europe. Heredity, 25, 662–667.
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Navas-Castillo, J., Cabrero, J. & Camacho, J. Chiasma redistribution in bivalents carrying supernumerary chromosome segments in grasshoppers. Heredity 55, 245–248 (1985). https://doi.org/10.1038/hdy.1985.97
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DOI: https://doi.org/10.1038/hdy.1985.97
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