Select all the statements that apply to mutations:

6E: The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?

Which shows a substitution mutation:

Original DNA: TTACATGG

Which shows a insertion mutation from the following DNA strand:

GATCATGTA

Which shows a deletion mutation from the following DNA sequence

CGTAAGATC

6E: A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky, rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood throughout the body. A single base mutation is responsible for these irregularly shaped blood cells. Which of these mutations most likely results in the mutated hemoglobin?

A mutation in which only one nucleotide is altered is called a: