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WGU C653 Heredity and Genetics Review exam with complete solutions

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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 Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More 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? Ch

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WGU C653 Heredity and Genetics
Review exam with complete solutions



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? - ANSWER- 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? - ANSWER-
Missense mutation

A single nucleotide is changed. What is this mutation called? - ANSWER- 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? - ANSWER-
Sense mutation

Which type of mutation is commonly linked to DNA breakage? - ANSWER-
Radiation exposure

Which type of mutation can cause nucleotide substitutions, change the number
of nucleotides, or structurally change the nucleotides? - ANSWER- 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? - ANSWER- 47

How many chromosomes are present in a triploidal karyotype of somatic cells if
the gamete cells of a diploid organism have 23 chromosomes? - ANSWER- 69

What is 5n an example of? - ANSWER- Polyploidy

What is 2n + 3 an example of? - ANSWER- Pentasomy

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