Genes aren't the only factor. Because you inherit one APOE gene from your mother and another from your father, you have two copies of the APOE gene. Having at least one APOE e4 gene increases your risk of developing Alzheimer's disease. If you have two APOE e4 genes, your risk is even higher.
Compound Time Signatures In compound time signatures, the beat occurs on a dotted note and is divisible by three. The most common compound time signatures are 6/8, 9/8 12/8.
The grouping of strong and weak beats is called meter. You can find the meter signature, also called time signature, at the beginning of every music piece, it is the 2 numbers written after the clef. The number on top tells you the number of beats in a measure; the number at the bottom tells you what note gets the beat. By Espie Estrella.