Multiple Choice
In the context of fundamentals of genetics, a form of a gene is an:
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In the context of the fundamentals of genetics, which element is found in both DNA and proteins?
A
Phosphorus
B
Nitrogen
C
Sulfur
D
Uranium
Verified step by step guidance1
Recall the basic chemical composition of DNA and proteins. DNA is made up of nucleotides, which include a sugar, a phosphate group, and nitrogenous bases.
Identify the elements present in DNA: carbon, hydrogen, oxygen, nitrogen, and phosphorus are common components.
Consider the composition of proteins, which are made of amino acids containing carbon, hydrogen, oxygen, and nitrogen. Some amino acids also contain sulfur.
Compare the elements found in both DNA and proteins. Nitrogen is present in the nitrogenous bases of DNA and in the amino groups of amino acids in proteins.
Conclude that nitrogen is the element found in both DNA and proteins, while phosphorus is unique to DNA and sulfur is unique to some proteins.
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