2
$\begingroup$

can anyone help me with this?

It shows two gene sequences for a sheep and a goat.

   5’------C C T G A G G A G C A T G T T------3’
   3’------G G A C T C C T C G T A C A A------5’
               5         6         7         8        9
   5’------C C T G A G G G G C A T G T T------3’
   3’------G G A C T C C C C G T A C A A------5’
               5         6         7         8        9

I hope u can see it.

number 1 = goat number 2 =sheep

  1. what differences are there between the two gene sequences?

  2. Decide the amino acids 5-9 for both gene sequence?

Improve this question
$\endgroup$
  • $\begingroup$ Look at the differences in the nucleotide sequences, and how those differences may change translation. $\endgroup$ – Galen Nov 7 '15 at 19:12
  • $\begingroup$ This question looks like it is from a homework assignment. What have you done to try to solve this problem on your own? $\endgroup$ – Galen Nov 7 '15 at 19:14
  • $\begingroup$ Thank you for replying. Well, as for question one, the goat has a AT meanwhile the sheep has a GC (under number 6) That may mean that there's a change in the sequence of the amino acid? Or is that thinking wrong?................. as for question 2) I find this difficult. I mean I have a table to see the amino acids, but what should i exactly do? $\endgroup$ – user19897 Nov 7 '15 at 19:18
  • 1
    $\begingroup$ You're right. A change in nucleotide sequence 'may' change the amino acid sequence. To find out, use a standard translation table (en.wikipedia.org/wiki/DNA_codon_table) to see if a different amino acid results from the difference in codons. To translate, replace each three consecutive nucleotides (codons) with the amino acid in the table. $\endgroup$ – Galen Nov 7 '15 at 19:24
  • 1
    $\begingroup$ For translating, keep in mind that real sequences may be read by transcriptases in 1 of 3 different reading frames at a time. For each codon, you look at 3 nucleotides, but you may get a different amino acid depending on where you start. $\endgroup$ – Galen Nov 7 '15 at 19:37