ISSN:
1432-0762
Keywords:
Key words Evolution
;
X chromosome
;
Female choice
;
Reciprocal crosses
;
Sexual selection
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Using literature data on reciprocal crosses I estimated the influence of sex-chromosomal genes on morphological and behavioral traits. To determine a special role of the sex chromosomes for sexually selected traits, I compared the estimated influence of X-chromosomal genes on sexually selected traits with their estimated influence on traits not under sexual selection. About one-third of the phenotypic variation in sexually selected traits is caused by X-chromosomal genes. There was, in contrast, no significant influence of X-chromosomal genes on traits that were classified as not sexually selected. Sexually selected traits thus seem to be influenced significantly more by X-chromosomal genes than traits not under sexual selection. Though this differential influence of X-chromosomal genes cannot readily be explained with current theoretical knowledge, it may shed some light on X-linked hybrid sterility and on the discussion between arbitrary and good-gene models for the evolution of female choice.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002650050508
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