0:00
Hello everyone.
00:01
In this question we have been given a dna sequence that is t a c g c a tga.
00:12
So we have to tell the complementary sequence of the rna.
00:18
And we know that for transcription the strand that is in 3 prime to 5 prime direction is the template strand and the strand that is the 5 prime to 3 .3 .5 direction is the template strand and the strand that is the 5 prime to 3.
00:30
Direction is the coding strand.
00:33
So the rna polymerase reads the strand in 3 prime to 5 prime direction of the template strand and adds the nucleotype basis in 5 prime to 3 prime direction.
00:45
So here t is complementary to a and it is complementary to thiamine but in rna instead of thyamine urosil is present.
00:54
So here a is complementary to u, c is complementary to g, g is complementary to c, c is complementary to g, a is complementary to uresil, the thiamine is complementary to adenine, one in is complementary to cytosine and adenine is complementary to uresil.
01:12
So here in the 5 prime to 3 prime direction we have the rna sequence, that is a -u -g -c -g -g -u, acu, and this may undergo translation for protein synthesis.
01:26
Now in the next question we have to fill in the blanks in which we have been asked.
01:31
That newly synthesized pre -mrna contains dash that code for proteins and dash that do not code for proteins.
01:40
So when the mrna is synthesized, it is known as the pre -mrna because it has to undergo processing for making it into the mature mrna.
01:51
And in the pre -mrna, we have exons as well as introns in it.
02:02
And the introns are basically the sequence which do not code for the protein.
02:11
So they are spliced out.
02:14
So these are the introns.
02:15
So here we will write that the newly synthesized pre -mrna contains exons that code for the protein and introns that do not code for the then in the next question we have been asked that after transcription the pre -mrna is modified into mature mrna by adding dash and dash and by removing dash through splicing.
02:48
So the pre -mrna, suppose this is the pre -mrna.
02:55
In this the first rna processing is the 5 prime capping in which the cap is done...