It would not fit. Minolta has two mounts, the older mount for mc and md glass, and the newer AF mount which is the same as the sony A-mount (pre E-mount). You can get a 50mm Minolta AF which has autofocus and is also nice. If you prefer prime lenses, you can get an adapter and use m42 lenses on the Dynax - m42 to sony A-mount. This is what I do. But beware that you have to use stop down focusing.
Minolta had three bayonet mounts , not two .
The first was the Minolta SR mount , for manual focus cameras . Often referred to MD mount which was a later type lens , not the mount .
Next was the Minolta A mount from 1985 for their furst auto-focus cameras which is what the O.P has .
Sony now own this mount for it's DSLR's and SLT cameras ( but not the mirror-less E mount cameras ) .
In 1996 they brought out another camera system for APS film and had the Vectis V mount .
This are an all electron lens similar to Canon EF lenses .
These can not be used on either of the earlier bodies .
http://www.submin.com/aps/collection/minolta/cameras/vectis_s1.htm
Minolta had five mounts if you include the rangefinder cameras they made .
first up was a screw in L39 mount one , in a few models , then in collaboration with Leica they did a couple in the Leica M mount .
So buyer beware that only one of the five mounts fit your camera .
In the U.K the lenses have Minolta AF on the bezel .
Lenses from the U.S have Maxxum AF on it .
Anything else won't fit .