A heritable trait would be something that your mom and dad could pass down to you through the combining of their genes. This could be anything from your hair color, genetic disorders etc...
Both joints are ball and socket joints, but the hip is much more mechanically constrained. There are other bones and muscles that get in the way of the mobility of the hip joint. This is partly because stability is more important in the hip joint due to its weight bearing function
<span>Trophoblasts
Trophoblasts are cells that make up the external layer of a blastocyst, this is a major source of nutrient for a newly formed organism</span>