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.
What does Sydney mean, popularity, numerology and more. The name Sydney is of French origin. The meaning of Sydney is from st denis, france. It is also of English origin, where its meaning is from St.Denis, France.iew the Sydney Name Popularity Page to see how the popularity trend for Sydney has changed since 1880, or to compare the popularity of Sydney to other names. Sydney is a variant spelling of Sidney. Variants of the name Sydney include Sydne, Sydnie. Sydney has the diminutive (nickname) Sid.