AQA A LEVEL BIOLOGY- GENES Questions With Accurate
Answers
Define gene - Accurate answers A section of DNA that is a sequence of bases coding for a sequence
of amino acids in a protein
Define genome - Accurate answers The whole of the genetic information of an organism
Define locus - Accurate answers Location of a gene on a chromosome
Features of the genetic code include - Accurate answers degenerate
universal
non-overlapping
triplet read one direction of DNA strand
separating by noncoding stop codes
How many different amino acids are there? - Accurate answers 20
How many possible codons are there? - Accurate answers 64 (4^3)
Define exons - Accurate answers a segment of a DNA or RNA molecule containing information
coding for a protein or peptide sequence.
Define introns - Accurate answers a segment of a DNA or RNA molecule that does not code for
proteins and interrupts the sequence of genes.
Define: degenerate code - Accurate answers more than one triplet codes for the same amino acid
Define: universal code - Accurate answers each triplet codes for the same amino acid in all
organisms
Answers
Define gene - Accurate answers A section of DNA that is a sequence of bases coding for a sequence
of amino acids in a protein
Define genome - Accurate answers The whole of the genetic information of an organism
Define locus - Accurate answers Location of a gene on a chromosome
Features of the genetic code include - Accurate answers degenerate
universal
non-overlapping
triplet read one direction of DNA strand
separating by noncoding stop codes
How many different amino acids are there? - Accurate answers 20
How many possible codons are there? - Accurate answers 64 (4^3)
Define exons - Accurate answers a segment of a DNA or RNA molecule containing information
coding for a protein or peptide sequence.
Define introns - Accurate answers a segment of a DNA or RNA molecule that does not code for
proteins and interrupts the sequence of genes.
Define: degenerate code - Accurate answers more than one triplet codes for the same amino acid
Define: universal code - Accurate answers each triplet codes for the same amino acid in all
organisms
