recessive etymology

Etymology:

  • Latin: "recessus" (withdrawal, retreat)
  • "Re-" (back, again) + "cedere" (to go, yield)

Meaning:

  • (of a trait or condition) Not appearing in an individual who carries the gene for it unless both copies of the gene are present (i.e., homozygous recessive genotype).

Origin:

In genetics, the terms "dominant" and "recessive" were first coined by Gregor Mendel in the mid-19th century. Mendel conducted experiments with pea plants and observed that certain traits, such as purple flower color, were always expressed (dominant) when present, while other traits, such as white flower color, only appeared when both copies of the gene were identical (recessive).

The term "recessive" comes from the Latin word "recessus," which means "withdrawal" or "retreat." This reflects the fact that recessive traits "withdraw" or are suppressed by the dominant trait when only one copy of the recessive gene is present.

Usage:

  • In genetics, the term "recessive" is used to describe traits that are not expressed in individuals with a heterozygous genotype (i.e., carriers of both dominant and recessive alleles).
  • The term can also be used figuratively to refer to something that is hidden or not apparent, similar to the idea of a "recess."

recessive relate terms

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