Aparticular protein has the following amino acid sequence within its primary structure (n . . ala-pro-his-trp-arg-lys-gly-val-thr . . c). a geneticist studying mutations affecting this protein discovered that several of the mutants produced shortened protein molecules that terminated within this region. in one of them, the his became the terminal amino acid. what dna single-base change(s) would cause the protein to terminate at the his residue? what other potential sites do you see in the dna sequence encoding this protein where mutation of a single base pair would cause premature termination of translation

When last G changes to A in tryptophan,it becomes stop codon. Lys,Arg and Gly can be potential sites for termınation.

Explanation:

If his is terminal aminoacid, Trp becomes stop codon. Trp= UGG UGA= stop codon. If last G changes to A, it will become stop codon. Lysine(AAA,AAG) and arginine(CGA,AGA) can be stop codon by changing first base pair from A/C to U. Glycine(GGA) can be stop codon by changing first base G to U. Stop codons are UGA,UAA,UAG.

b. the carbon cycle ensures living things have a source of hydrogen

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.