What do scientists know about the inheritance of the eyebrow shape trait?

i need to know what scientists know about the eyebrow shape traitWhat do scientists know about the inheritance of the eyebrow shape trait?
Its a polygenic trait; that mean that there are quite a few genes whcih go into determining what the eyebrow will look like.





there will be several genes involved in the shape of the skull firstly, becuse this will determin how the eyebrow will sit on the face. on top of this are the genes responsisble for where facial hair grows; this, again, has a load of genes involved in it. then there is the couler aswell, ect...





the way the body develops is the same in all vertabrates. there are a few genes called hox genes whcih determin the inital body plan. these genes infulence the expression of themseveles and others giveing a layered effect whcih ultimatly results in the end trait of your eyebrows (and other traits, eg. hairline). the actual genes involved whcih lead up to this are yet to be determined. it is an incredibly complexed order and it simply hasnt been worked out yet.





so..





a person will inherit half of the genes from thier each parent and some will give a stronger effect than others, but due to the random separaration of genes at spermato- / oogenesis and the complexty of the number of points involved it is impossible to say how this trait will exactly inherited at this point in time.