For adults, the most common sources of food allergic reactions are: 1  shellfish (that includes shrimp, lobsters, and crabs) 2  nuts from trees (such as walnuts) 3  fish. 4  eggs. more information...
When binary traits are available, they become classified as Dominant or recessive. A dominant trait is a trait the is evident by the appearance of the organism. A recessive trait is a trait the is present but is not evident in the appearance of the organism. Dark hair is a dominant trait to a recessive light hair trait. Two brunettes may have a chance of having a blonde child due to the fact that either of them may carry the blonde haired gene and not show it.
Dominant trait. A genetic trait in which one copy of the gene is sufficient to yield an outward display of the trait; dominant genes mask the presence of recessive genes; dominant traits can be inherited from a single parent.Mentioned in: Cutis Laxa, Polydactyly and Syndactyly, Pseudoxanthoma Elasticum.n inherited characteristic that is determined by a dominant allele. Polydactyly is an example of a dominant trait; individuals with either one or two copies of the polydactyly allele have extra fingers or toes. (dom'i-nÄnt trÄt).