Another indication of the inadequacy of the single-gene
hypothesis is the production of suri offspring from huacaya×huacaya
matings. This occurs rarely, but is frequent
enough in multiple data sets to indicate that it is a real
phenomenon. The two fleece types are quite distinct, so that misclassification is unlikely. Renieri et al. ascribe
these anomalous suris to new mutations, although they
are too frequent for this to be likely. It is more likely that
these suri offspring are segregating from one parent with
a suppressed suri genotype.
Documenting the details of the reasons for the unexpected
results will require future work that carefully
targets mating of the animals with unexpected phenotypes.
Specifically, suri offspring from huacaya parents
could be mated to huacaya mates to validate the presence
of the suri allele. Similarly, the occasional huacaya
produced from a suri sire with numerous suri offspring
could be mated to huacayas to determine if the suri allele
were present. If future work documents the DNA structure
of the allele proposed for suri fleece type, then a quicker
study of these exceptional cases could involve a broadbased
test of huacaya alpacas for the presence of the suri
allele.
Another indication of the inadequacy of the single-gene
hypothesis is the production of suri offspring from huacaya×huacaya
matings. This occurs rarely, but is frequent
enough in multiple data sets to indicate that it is a real
phenomenon. The two fleece types are quite distinct, so that misclassification is unlikely. Renieri et al. ascribe
these anomalous suris to new mutations, although they
are too frequent for this to be likely. It is more likely that
these suri offspring are segregating from one parent with
a suppressed suri genotype.
Documenting the details of the reasons for the unexpected
results will require future work that carefully
targets mating of the animals with unexpected phenotypes.
Specifically, suri offspring from huacaya parents
could be mated to huacaya mates to validate the presence
of the suri allele. Similarly, the occasional huacaya
produced from a suri sire with numerous suri offspring
could be mated to huacayas to determine if the suri allele
were present. If future work documents the DNA structure
of the allele proposed for suri fleece type, then a quicker
study of these exceptional cases could involve a broadbased
test of huacaya alpacas for the presence of the suri
allele.
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