homologic

Thân thiện

The homologic structures of a whale's flipper and a human's arm are evident in their bone arrangement.

Definition

1. 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.

Học thuật

Adjective

1. similar in evolutionary origin but not in function

Từ đồng nghĩa

• homological