Asingle mother who works in a factory sewing large sheets of canvas would be considered

The single mother would be considered to be a member of lower class. In addition, a class system employs a social ranking established primarily on economic position and a system of stratification below which country-dwellers were obligatory to work land rented to them by nobles in altercation for military protection was recognized as estate system.

Ithink the dna sequences may vary but the amino acid sequences are identical.