â Top â At conception, the babies sex is determined by chromosome characteristics-The genetic sex of a child is established at conception based on the 23rd pair of chromosomes it inherits from the parent.The mother's egg contains an X chromosome, and the father's sperm will contain either an X or Y chromosome. Top â At conception, the babies sex is determined by chromosome characteristics-The genetic sex of a child is established at conception based on the 23rd pair of chromosomes it inherits from the parent.
From the beginning, the purpose of the club has been the âpreservation, restoration and operation of old-time motorcycles.â Members of the AMCA own, restore, preserve, study or just admire motorcycles that fall into the antique category, meaning they are at least 35 years old.
<br /> -Beginning of New Answer- <br /><br /> Vintage is considered to be items that are at least 20 years old. At this point, anything from the 80s and 70s would be considered to be vintage. It is antique when it is at least 50 years old, so at this point (2012) anything from 1962 and later.