WGU C653 HEREDITY AND GENETICS REVIEW REAL
EXAM WITH ACTUAL QUESTIONS AND 100%
VERIFIED ANSWERS | LATEST 2025/ 2026 UPDATE |
GRADED A+ | 100% SUCCESS
A change occurs in one nucleotide of a triplet within a protein-coding
portion of a gene. This change results in a new triplet that codes for a
stop codon. What is this mutation called?
Nonsense mutation
A point mutation occurs in which a single nucleotide change results in
a codon that codes for a different amino acid. What is this mutation
called?
Missense mutation
A single nucleotide is changed. What is this mutation called?
Point mutation
A point mutation occurs in which a single nucleotide change results in
a codon that codes for the same amino acid. What is this mutation
called?
Sense mutation
Which type of mutation is commonly linked to DNA breakage?
Radiation exposure
Which type of mutation can cause nucleotide substitutions, change
the number of nucleotides, or structurally change the nucleotides?
, Chemical modification
How many chromosomes are present in a trisomal karyotype of
somatic cells if the gamete cells of a diploid organism have 23
chromosomes?
47
How many chromosomes are present in a triploidal karyotype of
somatic cells if the gamete cells of a diploid organism have 23
chromosomes?
69
What is 5n an example of?
Polyploidy
What is 2n + 3 an example of?
Pentasomy
Which process has one step that involves inserting segments of DNA
into plasmid vectors?
Recombinant DNA
Which process has one step that involves transferring DNA fragments
from a gel to a membrane filter?
Southern blot
A species of flower is shown to display a polygenetic inheritance in
color from dark blue (AABB)(+4) to white (aabb)(+0). The heterozygote
is medium blue (AaBb)(+2). What will be the final phenotypic ratios
for a cross of AaBb x aabb?
EXAM WITH ACTUAL QUESTIONS AND 100%
VERIFIED ANSWERS | LATEST 2025/ 2026 UPDATE |
GRADED A+ | 100% SUCCESS
A change occurs in one nucleotide of a triplet within a protein-coding
portion of a gene. This change results in a new triplet that codes for a
stop codon. What is this mutation called?
Nonsense mutation
A point mutation occurs in which a single nucleotide change results in
a codon that codes for a different amino acid. What is this mutation
called?
Missense mutation
A single nucleotide is changed. What is this mutation called?
Point mutation
A point mutation occurs in which a single nucleotide change results in
a codon that codes for the same amino acid. What is this mutation
called?
Sense mutation
Which type of mutation is commonly linked to DNA breakage?
Radiation exposure
Which type of mutation can cause nucleotide substitutions, change
the number of nucleotides, or structurally change the nucleotides?
, Chemical modification
How many chromosomes are present in a trisomal karyotype of
somatic cells if the gamete cells of a diploid organism have 23
chromosomes?
47
How many chromosomes are present in a triploidal karyotype of
somatic cells if the gamete cells of a diploid organism have 23
chromosomes?
69
What is 5n an example of?
Polyploidy
What is 2n + 3 an example of?
Pentasomy
Which process has one step that involves inserting segments of DNA
into plasmid vectors?
Recombinant DNA
Which process has one step that involves transferring DNA fragments
from a gel to a membrane filter?
Southern blot
A species of flower is shown to display a polygenetic inheritance in
color from dark blue (AABB)(+4) to white (aabb)(+0). The heterozygote
is medium blue (AaBb)(+2). What will be the final phenotypic ratios
for a cross of AaBb x aabb?
