Question

question #1: which statement best provides evidence that supports the explanation that the sequence of dna determines proteins? the structure of krt1 and krt2 determines the dna code that is translated to produce a specific protein with a specific shape, which determines its function the structure of the krt1 and krt12 genes determines the genetic information present in protein that determines the function of each dna molecule. the dna that codes for krt1 and krt12 is different, resulting in different protein structures with different functions the structure of each protein determines the order of bases in dna. the krt1 and krt12 proteins are different, resulting in different functions

Explanation:

To determine the correct statement, we analyze each option:

• Option 1: DNA sequence determines protein structure/function, not the other way around. Incorrect.
• Option 2: The structure of genes (DNA) doesn't determine the genetic info in proteins; DNA holds genetic info. Incorrect.
• Option 3: The DNA sequences for KRT1 and KRT12 are different (from the table: KRT1 has AGA, GGA, GTG, TTT, AGC, TCC; KRT12 has TTC, AAT, CCC, TAT, TGT, CTG). Different DNA sequences lead to different proteins (since DNA codes for proteins), and different proteins have different functions. This matches the relationship between DNA sequence, protein structure, and function. Correct.
• Option 4: Protein structure is determined by DNA sequence (order of bases), not the other way. Incorrect.

Answer:

The DNA that codes for KRT1 and KRT12 is different, resulting in different protein structures with different functions