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CHOOSE THE BEST ANSWER The genetic code is said to be redundant but unambiguous. Which of the following best supports this statement?

CHOOSE THE BEST ANSWER “Splicing” is one way eukaryotic organisms like humans regulate gene expression. What is involved in the process of splicing?

CHOOSE THE BEST ANSWER The HER2 gene is a proto-oncogene that regulates the cell cycle. Mutations in HER2 are associated with the development of breast cancer.  As a proto-oncogene, how do you expect mutations in HER2 to disrupt the cell cycle?

CHOOSE THE BEST ANSWER Use the table below to transcribe and translate the following DNA sequence and identify the final polypeptide strand. DNA: 3′ – TTGGGACCACGGAACCGT – 5′

CHOOSE THE BEST ANSWER Use the table below to transcribe and translate the following DNA sequence and identify the final polypeptide strand. DNA: 3′ – TACGGGGGTCCCTTGGCA – 5′

CHOOSE THE BEST ANSWER A mother and her two daughters each develop breast cancer at approximately the same age in their lives. Based on genetic analysis, it is determined that mutations in the BRCA1,  tumor suppressor gene, is responsible for all three instances of cancer. Their specific mutations are presented below (bold base pair). Mother: ATCGCTCCADaughter A: ATCGCTCCADaughter B: ATCGCTCCA Given these data, what is the most likely origin of each daughter’s cancer? Daughter A’s cancer is [answer1] Daughter B’s cancer is [answer2]

CHOOSE THE BEST ANSWER During DNA replication, our cells use the enzyme helicase to “unzip” the two strands that comprise the DNA molecule. To make copies of specific DNA sequences in the lab, scientists use polymerase chain reaction (PCR).  PCR mimics DNA replication in some ways, but not in how the two strands are pulled apart. How are the two strands of DNA unzipped in the lab during PCR? 

CHOOSE THE BEST ANSWER Red-green color blindness in humans is inherited as a recessive X-linked trait. The allele for normal vision is B, and the allele for colorblindness is b. A husband and wife have 2 sons and 2 daughters. One son and one daughter are color blind. What are the genotypes of the parents?

CHOOSE THE BEST ANSWER Which of the following correctly displays the Central Dogma of Biology?

CHOOSE THE BEST ANSWER What is the relationship between the terms “genotype” and “phenotype”?