The correct answer is option C, There are several variations, or alleles, of many genes
Explanation:
In a given set of population, and for a given set of genes there can be a single allele or there can be multiple sets of allele. But since any individual can carry only set of chromosome per cell,an individual only carries one or two alleles per gene. But if there are several genes then there would be several variations, or alleles, of many gene
<span>The operon binds to the RNA polymerase and releases the repressor.</span><span>
Amino acids like tryptophan and tyrosine are used to produce neurotransmitters and other products. Hormones such a serotonin and melatonin are made products of tryptophan as well as norepinephrine and adrenalin.</span>
Answer: Whereas an atom whose outermost electron shell is completely filled is least likely to bond with other atoms as the atom is stable due to completely filled shell.
