Chromosomal inversion
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An inversion is a chromosome rearrangement in which a segment of a chromosome becomes inverted within its original position. An inversion occurs when a chromosome undergoes two breaks within the same
An inversion loop in the A arm of a chromosome from an Axarus species midge
Balancing selection
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Balancing selection refers to a number of selective processes by which multiple alleles are actively maintained in the gene pool of a population at frequencies larger than expected from genetic drift
Chromosomal inversion
…an inversion in a local population. Inversion polymorphism can result from gene flow between this population and a population without the inversion. Balancing selection can also result in inversion polymorphism by frequency dependence or overdominance. The fitness differences between the inverted and the ancestral…
Grove snail, dark yellow shell with single band
Two active grove snails
Drosophila polytene chromosome