A person must be at least 18 years old to be appointed to the Senate and must be at least 30 to be President or Vice-President of the Senate. As only members of the House of Representatives are eligible to be appointed Prime Minister, the Prime Minister must be at least 18 years old.
â¢ RECESSIVE (adjective). The adjective RECESSIVE has 2 senses: 1. of or pertaining to a recession. 2. (of genes) producing its characteristic phenotype only when its allele is identical. Familiarity information: RECESSIVE used as an adjective is rare. RECESSIVE (noun). The noun RECESSIVE has 1 sense: 1. an allele that produces its characteristic phenotype only when its paired allele is identical. Familiarity information: RECESSIVE used as a noun is very rare.
Of or relating to a trait that is expressed only when the determining allele is present in the homozygous condition. n. Genetics. 1. A recessive allele or trait. 2. An organism having a recessive trait.. Genetics. a. pertaining to the allele of a gene pair whose effect is masked by the second allele when both are present in the same cell or organism. b. of or pertaining to the hereditary trait determined by such an allele. 3. Genetics. Compare dominant (def. 6). a. the recessive allele of a gene pair.