That is NOT true.
The story that male pattern baldness is caused by the alopecia gene from your mother is an outdated old wives tale. Doctor's believed this like 50 years ago but now know they that this is not true.
Male Pattern Baldness is a DOMINANT CHARACTERISTIC meaning that you can get the gene from EITHER your mother OR your father.
That is why male pattern baldness is more common now then it was 30 years ago. It will be even more common in the next generation 30 years from now.
The male pattern baldness gene can skip generations, and is utterly random in terms of which siblings it will affect; it is quite common for a man to keep a full head of hair while his brother begins experiencing severe thinning in his early twenties.
There are two factors causing male pattern baldness:
(1) The presence of DHT receptors on your hair folicles (usually occuring on the vertex or the hairline). These absence or the presence of these receptors are determined solely by genetics. These receptors make your hair folicles receptive to DHT and cause your hair to thin and fall out when DHT is present. If you do not have these receptors then DHT will not cause your hair to fall out.
(2) The prescence of DHT. This can be blocked or reduced by using propecia or something similar.
If you want to know more go to
www.bosley.com and get a free over the phone consultation with a hair expert who can tell you everything about genetics' role in hairloss.