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.
Sydney /syd-ney/ [2 sylls.] as a girls' name (also used less commonly as boys' name Sydney) is pronounced SIHD-nee. It is of Old English origin, and the meaning of Sydney is wide island. Also possibly place name: Saint Denis. Sidney is favored as a name for boys, and Sydney is almost entirely used for girls, probably due to influence in the 1980s from madam/celebrity Sydney Biddle Barrows.