Anonsense mutation in a particular gene resulted from a tgg --> tga mutation. what compensatory mutation in the anticodon of which trna would restore the protein polypeptide sequence?

Nonsense mutation is a type of mutation which results in stop codon and premature termination of translation.

In above mutation also, TGG codes for tryptophan but TGA is a stop codon.

TGG will be coded as ACC in mRNA and TGA will be coded as ACU in mRNA.

Thus, anticodon of ACC will be UGG and that of ACU will be UGA.

Thus, there should be a mutation in anticodon of tRNA UGG as it codes for tryptophan.

Its mutation to UGA will restore the normal polypeptide sequence.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."