18 Questions
What is the effect of the mutation in example 1 on the original DNA coding sequence?
A substitution of one nucleotide
What is the original amino acid sequence in mutation example 1?
Not provided in the sequence
What is the difference between the original and mutated mRNA sequences in example 2?
A substitution of three nucleotides
What is the effect of the mutation in example 2 on the original DNA coding sequence?
A substitution of three nucleotides
What is the relationship between the original mRNA sequence and the original amino acid sequence in mutation example 1?
The original mRNA sequence codes for the original amino acid sequence
What type of mutation is described in example 1?
Point mutation
What is the effect of non-disjunction events during meiosis?
Result in a gamete with an extra chromosome and a gamete with one too few chromosomes
What is aneuploidy defined as?
When an organism or cell has missing or additional chromosomes compared to the standard homologous pairs
What is the original mRNA sequence in the example mutation?
5’ AUG CCC AAA AGA AGU CGC UAU GUG UAG 3’
What is the mutated mRNA sequence in the example mutation?
5’ AUG CCC TAA AGA AGU CGC UAU GUG UAG 3’
What occurs during non-disjunction events?
Two homologous chromosomes do not separate at anaphase I of meiosis
What is the result of aneuploidy?
A gamete with an extra chromosome and a gamete with one too few chromosomes
What is the primary function of DNA in living cells?
To store genetic information
What is the term for the process by which DNA is passed from parent cell to daughter cell?
Replication
What is the purpose of genes in a cell?
To determine the characteristics of an organism
What is the structure of RNA?
Single-stranded
What is the function of mRNA in the cell?
To carry genetic information from DNA to the ribosome
What is the term for the process by which genetic information is used to synthesize proteins?
Translation
This quiz assesses your understanding of DNA mutations and their effects on mRNA sequences and amino acid sequences. It provides examples of original and mutated DNA and mRNA sequences, and asks questions about the resulting changes.
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