recessive allele

Pronunciation

Noun B2 Upper-intermediate

A version of a gene whose effect only shows up when an organism has two copies of it, because a dominant version would otherwise mask it.

"Both parents can carry a recessive allele for a trait without ever showing it themselves."

Synonyms and antonyms

dominant allele

Which word fits the gap? "Both parents can carry a _____ for a trait without ever showing it themselves."

Answer: recessive allele

In your own words, what does "recessive allele" mean?

A version of a gene whose effect only shows up when an organism has two copies of it, because a dominant version would otherwise mask it.