Abiologist is studying bacteria that can live in very salty environment what kind of science is this

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

Archaebacteria use for movement. celia flagella pili cell walls

What do transitional fossils best support?