homologic
Definition
- Adjective:
- Similar in evolutionary origin but not in function: Describes structures in different species that share a common ancestry in evolutionary history but have evolved to serve different purposes.
Usage
- The term "homologic" is a specialized adjective used primarily in biology and evolutionary science. It describes anatomical features or genes derived from a common ancestor.
- It is often used in contrast with "analogous," which describes structures that perform similar functions but have different evolutionary origins.
Examples
- Adjective:
- The wing of a bat and the arm of a human are homologic structures, both evolving from the forelimbs of a common mammalian ancestor.
- Scientists study homologic genes across species to understand evolutionary relationships.
Advanced Usage
- "Homologic to": Used to specify what a structure is evolutionarily related to.
- The flipper of a dolphin is homologic to the wing of a bat.
- In academic writing, the more common variant "homologous" is frequently used. "Homologic" is a less frequent synonym.
Variants and Related Words
- Homologous (adj): The standard and more frequently used term with the same meaning.
- Homologous chromosomes pair during meiosis.
- Homology (n): The state of being homologous; the study of such structures.
- The homology between these bones is evidence for common descent.
- Homolog (n): A thing that is homologous to something else.
- This gene is a homolog of a gene found in fruit flies.
Synonyms
- Homologous: Corresponding in structure and origin.
- Homologized: Treated as or shown to be homologous.
Antonyms
- Analogous: Similar in function but not in evolutionary origin.
- The wings of birds and insects are analogous, not homologic.
- Heterologous: Of different origin; not corresponding in structure or evolutionary derivation.
Adjective
-
similar in evolutionary origin but not in function
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