Genetic Inheritance 2026 Exam
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codon - ANSWER ✔✔a sequence of 3 nucleotides of DNA or RNA
sequence which encode for a particular amino acid
start codon - ANSWER ✔✔first codon in the transcribed mRNA; is
always AUG which codes for the amino acid methionine
stop codon - ANSWER ✔✔codon which signals to stop protein
synthesis; UAA, UAG, and UGA
, degeneracy of codons - ANSWER ✔✔the redundancy of the genetic
code, shown through the multiplicity of three-base pair codon
combinations which allow for an amino acid to be made from different
sequences
protein structure and function - ANSWER ✔✔altering a codon -->
alters amino acid --> alters primary structure --> alters structure of
protein --> alters functionality of protein
missense mutation - ANSWER ✔✔a single nucleotide change within
a sense codon that causes a change of amino acid which changes
structure of a protein
ex. sickle cell anemia
nonsense mutation - ANSWER ✔✔an addition of an additional stop
codon which results in the stopping of coding of a protein prematurely;
stopping an event
ex. cystic fibrosis
silent mutation - ANSWER ✔✔a single nucleotide change within a
sense codon which does not cause a change in amino acid