It normally is. The composers of the works determine which instruments and how many of each are going to required to perform their pieces.
It depends on the expression.
There are 23 chromosomes in a sperm cell. This is half the genetic material required to form a complete embryo.
Chromosomes are made of DNA which creates the data required for protein production.
Metacemtric are X shaped chromosomes,They have centromere in the middle so that two arms of the chromosome are equal. Submetacentric are if the chromosomes arms are unequal.
The required algebraic expression is a + 33.
Half of the number of chromosomes required to make a baby...
The required expression is x - sqrt(2).