Boron is located in Group/Family 13 of the periodic table, so boron has ___ valence electrons.

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

What is the cause hearing loss in human being

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?