Pertaining to or characteristic of trilobites, an extinct group of arthropods.

A species that has three distinct sexes: male, female, and hermaphroditic individuals.

An enzyme involved in glycolysis, responsible for converting dihydroxyacetone phosphate into glyceraldehyde-3-phosphate.

A set of three consecutive nucleotides in a DNA or RNA sequence that code for a specific amino acid during…

Having three germ layers: the ectoderm, mesoderm, and endoderm, characteristic of more advanced animals.

The condition of having three germ layers during embryonic development, characteristic of many animal phyla.

An organism or cell with three sets of chromosomes, typically resulting from a fertilization event involving a gamete with an…

A genetic condition in which an organism has three complete sets of chromosomes instead of the usual two.

The presence of an extra chromosome in a pair, leading to genetic disorders such as Down syndrome (trisomy 21).

A large muscle located at the back of the upper arm, responsible for extending the elbow joint.