What kind of letter is used for dominant traits

Upper case letters are used for dominant traits

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. Dominant traits are those traits which are expressed even in the presence of one copy of an allele for a particular trait in the gene. For example the letter B is used to represent brown eye color as a dominant allele.

electronic measurement tools display data on a screen after waiting for several minutes.

while some business owners prefer manual record keeping systems, most businesses use an electronic record keeping system - making it easier to capture information, generate reports and meet tax and legal reporting requirements.

explanation:

answer; /// i believe the correct answer is (thrombocytopenia); (a)