<u>Lower case letters</u><u> are used for recessive traits</u>
<h2>Explanation:</h2>
In biology, a trait or character is a feature of an organism. A trait refers to any genetically determined characteristic in the body. In technical terms, a genetic trait is amenable to segregation analysis rather than quantitative analysis. Recessive traits are those that are expressed only when two copies of an allele are present in the gene.
