In species where recombination occurs in one sex only i. Evolution of catalytic proteins or on the origin of enzyme species by means of natural selection. Sex linked is a trait in which a gene is located on a sex chromosome. Charlesworth D A dictionary of genetics. Heredity 59 : 73—
Open in a separate window. At meiosis the X and Y chromosomes first pair then disjoin and pass to different cells. Mating designs for estimating direct and maternal genetic variances and direct-maternal genetic covariances.
Thus, although a considerable body of theory predicts an association between SD and X-linkage, our increasing appreciation of dosage compensation adds new complexity, rendering empirical evaluation of this prediction even more critical.
Introduction Sexual dimorphism SD is the defining feature of organisms in which male and female reproductive organs occur in different individuals cf. Heredity 81 : 92—
Hence, it is clearly preferable to estimate them directly, removing this component from the X-linked variance, rather than simply assuming its absence. Sexual Conflict. Evolutionary changes in cis and trans gene regulation.
Barbato GF Andersson M