The genetic code is a sequence of dna nucleotides. in eukaryotic cells, the dna is located in the nuclei of the cells. the genetic code is nearly universal in that

a) the same codons are assigned to the same amino acids in most living things.
b) the same codons are assigned to the same dna sequences in most living things.
c) none of these are correct.
d) the same amino acids are assigned to the same dna sequences in most living things.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

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.

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f