Smooth hair is dominant in horses, and curly hair is recessive. Black hair is dominant, and chestnut hair is recessive. If S denotes smooth and s denotes curly, B denotes black and b denotes chestnut, classify the alleles according to their types.

Early 18th century british industries were generally small scale and relatively unsophisticated. most textile production, for example, was centred on small workshops or in the homes of spinners, weavers and dyers: a literal ‘cottage industry’ that involved thousands of individual manufacturers. such small-scale production was also a feature of most other industries, with different regions specialising in different products: metal production in the midlands, for example, and coal mining in the north-east.two illustrations of 18t