ch01_review - 1 Klug, Concepts of Genetics 8/e CHAPTER 1...

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Unformatted text preview: 1 Klug, Concepts of Genetics 8/e CHAPTER 1 MEDIA REVIEW QUESTIONS 1. The functional unit of heredity is a HINT: These units of inheritance control the pea plant traits that Mendel studied. a.Nucleus Incorrect. The nucleus is not passed on to the next generation. 1.1 From Mendel to DNA in Less Than a Century (p. 2) b.Chromosome Incorrect. Although chromosomes are inherited, they contain a collection of smaller heritable units. 1.1 From Mendel to DNA in Less Than a Century (p. 2) c.Nucleotide Incorrect. Nucleotides make up all nucleic acids, but a single nucleotide does not carry the information passed on in heredity. 1.1 From Mendel to DNA in Less Than a Century (p. 2) d.Gene Correct. The information stored in the nucleotide sequence of a gene is heritable and single gene units can be recombined with others. 1.1 From Mendel to DNA in Less Than a Century (p. 2) 2. True or false? The set of alleles for a given trait carried by an organism is called the organisms phenotype. HINT: Review the difference between genotype and phenotype. False. The set of alleles for a given trait carried by an organism is called the organisms genotype . The phenotype of an organism is its observable features resulting from a genotype. 1.1 From Mendel to DNA in Less Than a Century (p. 2) 3. What are the basic subunits of DNA and RNA? HINT: These subunits constitute the genetic code. a.Ribosomes Incorrect. Ribosomes are the sites of protein synthesis in a cell. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) b.Proteins Incorrect. The central dogma states that DNA makes RNA makes proteins, so proteins are not the basic subunits of DNA and RNA. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) c.Nucleotides Correct. DNA and RNA are each composed of four different types of nucleotides. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) d.Amino acids Incorrect. Amino acids are the basic subunits of proteins. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) 4. What is the central dogma of biology? HINT: How does information flow in an organism? a.DNA RNA protein Correct. The central dogma states that information flows from DNA to RNA to protein, meaning that DNA makes RNA, and RNA makes protein. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) b.DNA protein RNA 2 Incorrect. Information does not flow from DNA to protein. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) c.RNA DNA protein Incorrect. Information does not flow from RNA to DNA. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) d.Protein RNA DNA Incorrect. Proteins are the final component in the information flowchart that is the central dogma of biology. 1.2 Discovery of the Double Helix Launched the Recombinant DNA Era (p. 5) 5. Why are enzymes crucial to living organisms?...
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This test prep was uploaded on 04/06/2008 for the course BIOL 313 taught by Professor Vollbrecht during the Spring '08 term at Iowa State.

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ch01_review - 1 Klug, Concepts of Genetics 8/e CHAPTER 1...

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