male patterned baldness is a genetic trait that is carried on the x chromosome
It is referred to as sex linked in bio text books
It is also recessive - which means it would be masked should a dominant gene by paired with it
So - in other words - it is passed from mother to son - and not from the father at all
( as it is a recessive gene, it is unlikely that the mom would exhibit this trait )
If Richard's maternal grandfather is bald there is a one in four chance that he would be bald , genetically speaking
It is of the same sort of gene as hemophilia and colorblindness ,
His father's hair has nothing to do with it
The one in four nature of genetics also explains why it does not always show up in families where grandpa is bald
Now that your daily bio lesson is over - his hair does appear a bit thin some of those photos