Cuales son las ventajas y desventajas de las vacunas y antibióticos

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.

What is the difference between an igneous, sedimentary and metamorphic rock

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above