Font size
WorksheetsGenetic Coding Practice
Total questions: 20
Worksheet time: 53mins
What is the basic unit of heredity that is located on chromosomes?
Protein
Gene
Lipid
Carbohydrate
Which of the following is a possible effect of a mutation in a gene?
It always results in a harmful effect.
It can be beneficial, harmful, or neutral.
It only affects the organism's appearance.
It never affects the organism.
If a DNA strand has the sequence AGCT, what is the sequence of the complementary DNA strand?
TCGA
AGCT
CGAT
GCTA
Using the mRNA codon chart, what amino acid is coded by the mRNA codon AUG?
Glycine
Methionine
Serine
Valine
Which of the following sequences is a possible mRNA sequence transcribed from the DNA sequence TACG?
AUGC
ATGC
UACG
ACGT
What is the complementary RNA sequence for the DNA sequence GCTA?
CGAU
GCTA
CGAT
UAGC
Fill in the complementary bases to this DNA strand from left to right.
(a)
What is the complementary side of this DNA strand? (use all caps)
(a)
Which codons code for the amino acid serine?
AAA and AAG
CUA and CUG
UCU and AGU
GAG and GAA
Which of the following is a “stop” codon?
AAG
UGC
UGA
UGG
The codon UUU codes for the amino acid:
threonine
phenylalanine
glycine
leucine
What amino acid corresponds to the following mRNA?
AGU
Serine
Valine
Glycine
Proline
What would be the correct amino acid sequence for the codons shown below:
A U G - G A C - U A G
Met - Asp - STOP
Gln - Pro - Ile
Lys - Cys - Pro
Ser - Asp - Met
What is a gene?
A type of protein
A section of DNA that codes for a protein
A cell component
Given the DNA sequence of TAGCAT, what would the RNA code be?
UTCGTU
ATCGTA
AUCGUA
UUCGUU
Given the DNA sequence of GCGATA, what is the RNA code?
CGCUAU
GCGUAU
CGCTAT
GCGTUT
A ____ is a region of DNA that controls a trait & makes a protein
gene
phenotype
protein
acid
