Age-dependent allozymic variation in a natural population of lizards

An analysis of allozymic variation at 17 loci in a population of the sagebrush lizard ( Sceloporus graciosus ) in southern Utah yielded an estimate of genic heterozygosity of 0.028. Seven of the loci were variable, but only one, Est-1 , was strongly polymorphic. The observation that the frequency of the common genotype ( MM ) at the Est-1 locus declined monotonically in successive age classes from 0.74 in hatchlings to 0.58 in adults 4 years old or older suggests that allele frequencies at this locus are not independent of selective influences.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44183/1/10528_2004_Article_BF00486175.pd