In the sickle-cell anemia mutation, the 5'-gag-3' codon for glutamic acid becomes the 5'-gug-3' codon for valine. assuming a single nucleotide substitution accounts for this mutation, what is the change in the dna?

The adenine is substituted by the uracil

Explanation:

In this mutation, the adenine nucleotide of the glutamic acid was replaced wrongly for an uracil (this is actually a nucleotide characteristic of the RNA and not the DNA). This process is called a mutation by substitution.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

a