BioChem C785 - WGU - Module 1 - all Questions and Correct Answers Rated A

A couple has 6 children, 4 girls and 2 boys, all of whom have prominent chin dimples. If only the mother has a prominent chin dimple, what is the likely inheritance pattern for the chin dimple? Correct Answer- autosomal dominance A man and woman with both type O blood have 4 children, what will be the blood types of their children? Correct Answer- 100% type O A patient with xeroderma pigmentosum is prone to developing multiple skin cancers starting in childhood. This occurs because of a mutation in a gene that codes for enzymes that help repair DNA damage through the nucleotide excision repair (NER) pathways. How does the NER differ from other repair mechanisms? Correct Answer- The error in one strand of DNA is removed as well as several nucleotides on either side of the error. The gap that was removed is filled in by DNA polymerase. A research scientist is trying to create a new strain of bacteria that can produce a protein needed for her research. What molecule will act as a template in creating the new protein? Correct Answer- messenger RNA (mRNA) A woman is homozygous for an abnormal gene on Chromosome 2 that codes for an autosomal dominant disease. This means that she Correct Answer- will have the disease An inherited autosomal recessive disease Correct Answer- can only occur if both parents carry at least one abnormal gene Blood is what type of inheritance? Correct Answer- codominance