Morphology studies size, shape, and structure of animals, plants, and microorganisms. Anatomy and morphology are often used interchangeably. Structure and function are closely related, making separation artificial
Axolotl is a rare aquatic salamander found only in Mexico City's lake system. Adult axolotls retain juvenile features and can regenerate limbs. Wild axolotls have brown skin with gold flecks. Captive axolotls start at $40-50, some rare ones can exceed $1,000
Allomorph is a variant phonetic form of a morpheme without changing meaning. Morpheme allomorphs are governed by morphophonemic rules. Rules determine pronunciation based on phonological or morphological context
Ergative-absolutive alignment treats subject of intransitive verb like object of transitive verb. Found in Basque, Georgian, Mayan, Tibetan, and certain Indo-European languages. Languages can be morphologically ergative but syntactically accusative (e.g., Basque). Dyirbal is only known language showing syntactic ergativity with accusative pronouns
ICD-O is a domain-specific extension of ICD for tumor diseases. Currently in its third revision (ICD-O-3). Widely used by cancer registries
Sexual dimorphism occurs when sexes of same species show different morphological traits. Most dioecious species exhibit sexual dimorphism, including animals and plants. Opposite of dimorphism is monomorphism, where both sexes are indistinguishable