A 15-nucleotide sequence that includes a stop codon at the end (as part of the 15-nucleotide sequence) will direct the production of a polypeptide that consists of:

a polypeptide that consists of 4 amino acids

Explanation:

Using the genetic code, a codon or a triplet of bases specifies an amino acid. There is a 15 nucleotide sequence including a stop codon. Thus, we have 3 nucleotide each specifying for an amino acid including the start codon which in eukaryotes codes for methionine and in prokaryotes formyl methionine but excluding the stop codon/termination codon which does not specify for any amino acid.

So, we will have a polypeptide chain of 4 amino acids (3 nucleotides in four places gives 12 nucleotide sequence).

Ans.

Plants that live in a fire-prone biome show various adapations that make them suitable to survive frequent fires. These adaptations include presence of thick bark to minimize heat damage, epicormic buds (buds present inside the tree bark) that become active and grow due to environmental stress, fire-stimulated germination and flowering, heat-resistant seeds that break their dormancy after sometime of fire, and fire-resistant roots that quickly resprout in recently burned regions.