>Two sexes, M & F. Two female castes. Sex isn't a caste distinction.
Good catch- I was sloppy with my summary.
>Phenotype seems a better fit:
Agreed. From the abstract:
'The capacity of the honey bee to produce three phenotypically distinct organisms (two female castes; queens and sterile workers, and haploid male drones) from one genotype represents one of the most remarkable examples of developmental plasticity in any phylum.'
http://m.genome.cshlp.org/content/28/10/1532https://www.sciencedaily.com/releases/2018/08/180822130958.htm
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