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.
Alleles are dominant or recessive, meaning: 1  the characteristic controlled by a dominant allele develops if the allele is present on one or both chromosomes in a pair. 2  the characteristic controlled by a recessive allele develops only if the allele is present on both chromosomes in a pair.lleles are dominant or recessive, meaning: 1  the characteristic controlled by a dominant allele develops if the allele is present on one or both chromosomes in a pair. 2  the characteristic controlled by a recessive allele develops only if the allele is present on both chromosomes in a pair.