Animal asymmetry

Animal asymmetry

problems and defects in mucus clearance that are characteristic of primary cilliary dyskinesia, a disorder of motile cilia. Anything related to signaling? This is one of the most exciting aspects of primary cilium biology and BBSome function. In the ear of bbs knockout animals, hair cells frequently fail to align with one another, a characteristic of defective planar cell polarity (PCP). Althou...

Left-Right Asymmetry in Animal Embryogenesis

Fluctuating asymmetry and animal welfare: how far are we? And how far should we go?

In the associated review, published in this issue of the Journal, Møller and Manning (2003) propose measures of developmental instability, primarily fluctuating asymmetry, for the assessment of animal welfare in agricultural practice. They see the advantages of fluctuating asymmetry in that it provides a single measure of organismal health that ‘‘can be used in all kinds of organisms including ...

Fraenkel Asymmetry

For simplicity, we restrict attention to subregions of the plane. Let Ω ⊆ R 2 be the closure of a bounded, open, connected set of area |Ω| with piecewise continuously differentiable boundary and perimeter . The classical isoperimetric inequality:

Fluctuating Asymmetry

Fluctuating asymmetry refers to small random deviations from perfect symmetry in bilaterally paired structures; it is thought to reflect an organism’s ability to cope with genetic and environmental stress during development and its utility as an indicator of such stresses is based on the assumption that perfect symmetry is an a priori expectation for the ideal state of bilateral structures. Flu...