Definition of Dominant Trait. Before we can define exactly what a dominant trait is, we must first define and discuss many genetics terms. A gene, or unit of heredity, can have many different versions called alleles. There are often two kinds of alleles: Dominant allele: masks the effects of another allele; designated by an uppercase letter ; Recessive allele: effects are hidden by a dominant allele; designated by a lowercase letter ; Normally, individuals have two alleles for one gene: one from their mom and one from their dad.
Sydney is mostly a girls' name, but it is used for boys 4.31 percent of the time.
Personal experiences with the name Sydney: | Edit. I have been a Sydney since 1973 when no girls had this name. I only knew of one woman with the name and still remember her - a zookeeper at the San Diego Zoo. Sydney Donahue I think - in case you are out there!