ology Semester II Exanm Ms. Theriault 2017-2018 ow many amino acids are coded fo

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ology Semester II Exanm Ms. Theriault 2017-2018 ow many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide. CGAUAC 1. D) 6 In humans, where does DNA replication take place? A) cytoplasm B) ribosome 2. C) nucleus D) vacuole 3. Which scientists figured out the three-dimensional structure of DNA by using a model of metal and wood? A) Hershey and Chase B) Watson and Crick C) Pauling and Franklin D) Chargaff and Griffith What is the main reason that sex-linked disorders are most often observed in males? A) The X chromosome only has genes for genetic disorders B) The Y chromosome cannot have genes that cause genetic disorders. C) The Y chromosome cannot mask alleles on the X chromosome D) The X chromosome has genes only for sex determination 4. 5. A female is born with attached earlobes, which is a recessive phenotype. Which of the followir genotypes could her parents have? A) RR and RR B) Rr and RR C) Rr and rr D) RR and rr Some members of a family have a recessive sex-linked disorder. Which of the following statements about the family would be true? A) All males would have the disorder. B) All females would be carriers. C) Only males would have the disorder. D) Only females would be carriers 6. Figure 8.1 shows a single strand of DNA. Choose the first three nucleotides of the other D strand 7. CCGTACT FIG. 8.1

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