making proteins

[chenwithasterisk]

1.the mRNA sequence is shown.

GUAA CCT GAG CAUUC
if the first base G is deleted, why would it be incorrect to say such an organism is a mutant?
i said:
because UAA is one of the three stop condons.this means no amino acids will be produced.mutation is caused by a change in the base sequence,causing a reading frame shift,producing different amino acids.however in this case, no amino acids will be produced.thus its not concerned with wether or not it is a mutant.

however, this answer says,because the deletion of a base from RNA,offspring can not inherit any changes.only changes in DNA can be inherited.

i totally disagree.any suggestions?

[mith]

Refer to the definition of mutant.

[chenwithasterisk]

mutant is an individual resulting from mutation,which is a sudden structural change in the DNA of a gene.

BUT refer to mutation, changes to base sequence of genetic material(either DNA or RNA).

so shouldn RNA be invovled?

however, i conviced my self by following explanation: the sequence of bases of DNA determine the sequence of base of RNA.therefore,if an organism has a normal set of DNA,but a change occurs in RNA.it can not be called a mutant.

u know wat i mean? i even cant explain well hehe

[sachin]

1.the mRNA sequence is shown.

GUAA CCT GAG CAUUC

Is this your RNA...........???

Then where from where T---- "GUAA CCT GAG CAUUC "came from??

Ok understanding mistake.........

The matter of mutation due to deletion of NB from mRNA can not cause mutation.......

Ya, but if it is genomic RNA of RNA Virus.... Then it may be...

[chenwithasterisk]

hi:
wats NB?sorry for the mistake, it should be uracil.

[sachin]

hi:
wats NB?sorry for the mistake, it should be uracil.

NB= Nitrogen Base.....