Question

How is the protein created from the mRNA sequence which reads AUGAUAGUGUAC different from the protein created from one that reads AUGAUAGUGUAG?
U
C
A
G
UUU
Phenylalanine
UCU
Serine
UAU
Tyrosine
UGU
Cysteine
U
U
UUC
Phenylalanine
UCC
Serine
UAC
Tyrosine
UGC
Cysteine
C
UUA
Leucine
UCA
Serine
UAA
Stop
UGA
Stop
A
UUG
Leucine
UCG
Serine
UAG
Stop
UGG
Tryptophan
G
CUU
Leucine
CCU
Proline
CAU
Hisitidine
CGU
Arginine
U
C
CUC
Leucine
CCC
Proline
CAC
Hisitidine
CGC
Arginine
C
CUA
Leucine
CCA
Proline
CAA
Glutamine
CGA
Arginine
A
CUG
Leucine
CCG
Proline
CAG
Glutamine
CGG
Arginine
G
AUU
Isoleucine
ACU
Threonine
AAU
Asparagine
AGU
Serine
U
A
AUC
Isoleucine
ACC
Threonine
AAC
Asparagine
AGC
Serine
C
AUA
Isoleucine
ACA
Threonine
AAA
Lysine
AGA
Arginine
A
AUG
Methionine/Start
ACG
Threonine
AAG
Lysine
AGG
Arginine
G
GUU
Valine
GCU
Alanine
GAU
Aspartate
GGU
Glycine
U
G
GUC
Valine
GCC
Alanine
GAC
Aspartate
GGC
Glycine
C
GUA
Valine
GCA
Alanine
GAA
Glutamate
GGA
Glycine
A
GUG
Valine
GCG
Alanine
GAG
Glutamate
GGG
Glycine
G
a. The first has fewer amino acids than the second.
b. The first has isoleucine where the second has leucine.
c. The first has one more amino acid than the second.
d. The first has serine where the second has valine.

Answer 1

Answer:a). The first has fewer amino acids than the second.

Explanation: The amino acid sequence of the protein created from the first mRNA sequence is Methionine-isoleucine-valine while the amino acid sequence of the protein created from the second mRNA sequence is Methionine-isoleucine-valine-tyrosine.

From the information provided, AUG codes for methionine, AUA codes for isoleucine, GUG codes for valine UAG codes for 'stop', and UAC codes for tyrosine. Therefore, the first protein has fewer amino acids than the second protein.