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.
This chart illustrates how many Girls were named Sydney in the U.S. since 1880. A few facts about the girl's name Sydney: Records indicate that 152,690 girls in the United States have been named Sydney since 1880. The greatest number of people were given this name in 2000, when 10,238 people in the U.S. were given the name Sydney. Those people are now 15 years old.