What would happen if one of the DNA nucleotides was deleted? What if the first T

Question

What would happen if one of the DNA nucleotides was deleted? What if the first T was substituted for an A? Would a substitution always result in a change? Explain why or why not. Using your newly formed model of DNA from Exercise 1, write the coding strand below. Use the coding strand to determine the mRNA strand and the amino acids formed. Do this separately for Row 1 and Row 2 of your DNA model. Did the new DNA model form any two of the same amino acids? Optional: Compare the amino acids that were formed in this experiment with those of classmates who also performed this experiment. Were there many similarities?

Explanation / Answer

Only one question can be answered at a time.Since you have posted these many , let me help you out with the first three questions of exercise 2.

Ans 1.

The complimentary strand will have the complement sequence of bases with respect to coding strand.

So the sequence of complimentary strand will be

GCA GAG AAG CCT GTG

Ans 2. The sequence of mRNA transcript is again complimentary to DNA sequence. The mRNA Sequence will be

GCA GAG AAG CCU GUG

Ans 3. Each mRNA Codon encodes for an amino acid molecule (except for 3 stop codons) which forms polypeptide chain.

The amino acid sequence will be

M RNA strand GCA GAG AAG CCU GUG

Amino acid sequence : Ala- Glu - Lys - Pro - Val

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