A DNA segment has base order AGC TTA TCG. Which copy exhibits a frameshift mutation through deletion? (1 point)
TTA TCG
AGC TCG
AGC TTA TAG
AGC TTT CG
The copy that exhibits a frameshift mutation through deletion is "AGC TTT CG".
A DNA segment has base order CCC ATA GCT. Which copy exhibits a deletion in the first codon triplet and then a substitution mutation? (1 point)
CCA ATA GCT
CCC TAG CT
CCA TAG CT
CCA TAA CT
The copy that exhibits a deletion in the first codon triplet and then a substitution mutation is "CCA TAG CT".
Which type of mutation causes cystic fibrosis? (1 point)
deletion silent substitution insertion
The type of mutation that causes cystic fibrosis is a deletion mutation.
Which statement about chromosomes is true? (1 point)
Chromosomes are found in sets of three. DNA contains chromosomes.
The same number of chromosomes appears in haploid and body cells.
Chromosomes contain DNA.
The statement "Chromosomes contain DNA" is true.
Which modification affects an organism’s expressed characteristics while leaving its DNA sequence unchanged?
(1 point)
deletion mutation insertion mutation substitution mutation epigenetic change