Answer:
A
Explanation:
The reason the deletion of a nucleotide can be a lethal mutation is that it causes a frameshift mutation. This is due to teh fact that the codon sequence on the DNA is shifted by a single nucleotide. Therefore, the codons will read differently downstream from the place the deletion happened. The amino acids coded for by these codons will change too. The translated proteins will be defective and the organisms will be adversely affected, phenotypically.
Answer: 2).it will result in an incomplete protein that does not function properly
Explanation: A codon is a triplet of nucleotide in an mRNA that codes for a particular amino acid. Some amino acids are specified by more than one codon. UAC and UAA are examples of codons found in an mRNA. UAC specifies amino acid tyrosine while UAA does not specify any amino acid and signals the end of translation, it is therefore called a stop codon. When a stop codon is encountered during translation, protein synthesis will be inhibited and this will result in a nonfunctional protein with incomplete amino acid sequence.
C: Mountains.
Explanation: The two plates collide and push up against each other, forming the mountains
