DNA Mutations — Unit test Answers

Which accurately describes the relationship between cancer risk and exposure to mutagens?

Missense, nonsense, and silent mutations are examples of which type of mutation?

Which statements describe the characteristics of an individual protein? Select two options.

Which flow chart correctly organizes the structures of heredity, from least to most complex?

Which base is found only in DNA?

Photo 51 is a picture of the structure of DNA that was used to create a model of DNA. Who created the photo?

What does a karyotype show?

A scientist observes a pair of separate chromosomes that have genes for the same trait arranged in the same order. However, some of the alleles for the genes are different. What is the scientist most likely observing?

What will happen if RNA polymerase fails to attach to the promoter?

A mutation causes a sequence of DNA that has the nucleotides TTG to be changed to TCG. The resulting protein has a different sequence of amino acids. Which type of mutation is this?

What purpose does the peptide bond serve in protein synthesis?

Which diagram correctly shows how homozygous alleles are found on homologous chromosomes?

What does DNA provide the code for?

Many different types of mutations can occur within the body. An individual experiences a mutation that changes a base in a mRNA strand, but during translation the mRNA strand still creates the same protein. Which type of mutation is responsible for the change in the mRNA base?

Which carries the code for protein synthesis from the cell nucleus to the cytoplasm?