Question

1. translate the mrna strand into an amino acid sequence

uac
cca
uau
gag
aaa
uau

Explanation:

Step1: Translate UAC

Using the codon table, UAC (first letter U, second C, third C? Wait, no: first letter U, second A, third C? Wait, the codon is UAC: first letter U, second A, third C? Wait the table: first letter U, second A, third C? Wait no, the codon UAC: first letter U, second A, third C? Wait the table: looking at first letter U, second A, third C? Wait no, the codon UAC: first letter U, second A, third C. Wait the table: under first letter U, second A, third C? Wait the table has UAU (Tyr), UAC (Tyr)? Wait the first column under U (first letter U) and second letter A: UAU (Tyr), UAC (Tyr)? Wait the user's codon is UAC. So UAC: first letter U, second A, third C. Wait the table: first letter U, second A, third C? Wait the table shows UAU (Tyr), UAC (Tyr)? Wait the codon UAC: let's check the table. First letter U, second A, third C: looking at the table, under U (first letter), second letter A, third letter C? Wait the table has UAU (Tyr), UAC (Tyr)? Wait maybe I misread. Wait the codon UAC: first letter U, second A, third C. So UAC is Tyr? Wait no, the table: first letter U, second A, third C: UAU (Tyr), UAC (Tyr)? Wait the user's codon is UAC, so that's Tyr.

Step2: Translate CCA

First letter C, second C, third A? Wait CCA: first letter C, second C, third A. Looking at the table: first letter C, second C, third A: CCU, CCC, CCA, CCG are Pro. So CCA is Pro.

Step3: Translate UAU

First letter U, second A, third U? Wait UAU: first letter U, second A, third U. Looking at the table: UAU (Tyr), UAC (Tyr). So UAU is Tyr.

Step4: Translate GAG

First letter G, second A, third G. Looking at the table: GAU (Asp), GAC (Asp), GAA (Glu), GAG (Glu). So GAG is Glu.

Step5: Translate AAA

First letter A, second A, third A. Looking at the table: AAA (Lys), AAG (Lys). So AAA is Lys.

Step6: Translate UAU

Again, UAU is Tyr.

Answer:

Tyr, Pro, Tyr, Glu, Lys, Tyr