Question

A change in genotype, but not in phenotype, is most likely due to _________.

a nonsense mutation at the beginning of a gene
a point mutation in the third position of a DNA triplet
a mutation that leads to a frameshift in the middle of a gene
thymine dimer formation in the coding region of a gene

Answer 1

In biology, a nonsense mutation is a type of point mutation arising due to replication error and resulting in the generation of a nonsense codon/stop codon

Step-by-step explanation: