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41 Cards in this Set
- Front
- Back
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The Hershey and Chase experiment determined that: A) Protein and DNA are the hereditary materials of viruses. B) Protein, not DNA are the hereditary. C) Viruses do not contain hereditary material D) DNA, not protein, is the hereditary material of viruses |
D) DNA, not protein, is the hereditary material or viruses. |
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The main molecule that functions to replicate DNA in bacterial cells is: A) DNA nucleotide triphosphatase B) DNA polymerase III C) Nucleoside polymerase D) DNAase |
B) DNA polymerase III |
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The genetic code is carried on: A) Polypeptides B) Fatty Acids C) Carbohydrates D) Nucleic Acids E) Molecules containing amino acids |
D) Nucleic Acids |
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The Okazaki fragments formed on a lagging strand of DNA are joined together by the enzyme: A) Topoisomerase B) Ligase C) DNA polymerase I D) Strand stabilizing proteins |
B) Ligase |
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Who was the first to discover that DNA might be a helix of some sort using x-ray diffraction crystallography? A) Rosalind Franklin B) Maurice Wilkins C) James Watson D) Linus Pauling E) Mary Connell |
A) Rosalind Franklin |
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The mode of DNA replication determined by the experiments of Meselson and Stahl was: A) Dispersive B) Conservative C) Liberal D) Semi-Conservative |
D) Semi-Conservative |
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The sequence of amino acids in a protein are determined by A) the arrival sequence of tRNA's to the ribosome B) the sequence of ribosomes on a polypeptide C) the sequence of anticodons on a DNA molecule D) the sequence of nucleotides in a gene E) the sequence of histones on a RNA molecule |
D) The sequence of nucleotides in a gene |
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The observation that a single amino acid may have more than one codon represents: A) Unambiguity B) Universality C) Degeneracy D) Consistency |
D) Degeneracy |
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Why is a transfer RNA referred to as an "adapter molecule"? A) It fits the proper codon to the correct genetic code B)It fits the parental strand of DNA to the newly replicated strand C) It makes sure the ribosome is reading the correct anticodon D) It aligns specific amino acids with specific codons E) It is involved with the transcription of an M-RNA molecule |
D) It aligns specific amino acids with specific codons |
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The large ribosomal subunit site first occupied by a t-RNA molecule during the initiation phase of translation is the: A) A site B) B site C) C site D) P site |
D) P site |
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The amino acid that is linked to the first t-RNA in the P site is: A) Arginine B) Leucine C) Methionine D) Phenylalanine E) Methamphetamine |
C) Methionine |
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During prophase, centrosomes: A) Remain fixed in one location B) Disappear C) Divide several times D) Move to opposite ends of the cells E) Are maneuvered by microtubules |
D) Move to opposite ends of the cells |
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The protein containing structures to which spindle fibers attach are called: A) Kinetochores B) Centrioles C) Centromeres D) Chromatids E) Ribosomes |
A) Kinetochores |
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Where in Mitosis does genetic shuffling occur? A) Prophase I B) Prophase II C) Anaphase II D) Interphase E) It doesn't |
E) It doesn't |
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In which of the following stages of the cell cycle are chromosomes replicated? A) Prophase of mitosis B) Prophase I of meiosis C) Gap phase I of interphase D) Gap phase II of interphase E) S-phase of interphase |
E) S-phase of interphase |
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In which of the following stages would you find a replicated chromosome (dyad)? A) G1 B) G2 C) Telophase D) Late anaphase E) Early telophase |
B) G2 |
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At what stage of mitosis do sister chromatids separate? A) Prophase B) Prophase II C) Anaphase I D) Anaphase E) Interphase |
D) Anaphase |
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A genetic shuffle in meiosis that results in a random assortment of maternal and paternal chromosomes into gametes occurs in: A) Prophase I B) Metaphase I C) Anaphase II D) Telophase I E) Prophase II |
B) Metaphase I |
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What is the purpose of sexual reproduction? A) To shuffle genetic variation B) To reduce genetic variation among offspring C) To cause evolution within an individual organism D) To generate metabolic heat |
A) To shuffle genetic variation |
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The ________ undergoes the first meiotic division in human males. A) Primary spermatocyte B) Secondary spermatocyte C) Spermatid D) Spermatogonium |
A) Primary Spermatocyte |
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Mendel's principle of segregation applies to the: A. separation of a pair of alleles into different gametes B. making of clear distinctions between genotype and phenotypes C. independent segregation of alleles of one gene pair from those of another gene pair D. dominant expression of some alleles with respect to others in the heterozygote E. the incomplete phenotypic expression of phenotypes |
A. separation of a pair of alleles into different gametes |
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Mendel’s principle of independent assortment applies to the: A. segregation of alleles of two different genes B. genes linked on an X chromosome C. incomplete dominance D. environmental effect E. the interaction of one gene on the expression of another
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A. Segregation of alleles of two different genes |
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What is a gene? A. sequence of amino acids B. a sequence of nucleotides C. an enzyme D. Codons E. A series of sugar-phosphates
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B. Sequence of nucleotides |
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In green peas, if tall plant height is dominant to short, and green seed color is dominant to yellow seed color, what is the expected ratio of the offspring from a cross between pure breeding tall, green-seeded plants and short yellow-seeded plants? A. all short and yellow B. all tall and green C. 9/16 tall, green; 3/16 tall, yellow; 3/16 short, green; 1/16 short, yellow D. 1/2 tall, green; 1/2 short, yellow E. 1/2 tall, yellow; 1/2 tall, green
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B. All tall and green |
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If the offspring between pure breeding tall, green-seeded plants and short yellow-seeded plants are allowed to self-fertilize what would you predict their offspring's phenotypic ratio to be? A. all short and yellow B. all tall and green C. 9/16 tall, green; 3/16 tall, yellow; 3/16 short, green; 1/16 short, yellow D. 1/2 tall, green; 1/2 short, yellow E. 1/2 tall, yellow; 1/2 tall, green
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C. 9:3:3:1 |
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Which of the following concepts does the cross in the previous question best illustrate? A. incomplete dominance B. codominance C. principle of segregation D. independent assortment E. linkage
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D. Independent assortment |
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7. If you cross a red snapdragon and a white snapdragon and get a pink snapdragon, what pattern of inheritance is likely in operation? A. sex linkage in males B. incomplete dominance C. epistasis D. complete dominance E. codominance |
B. Incomplete dominance |
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If you shave the hair off the side of a siamese cat and it grows back dark rather than light, what is likely influencing this pattern of inheritance? A. codominance B. sex linkage C. epistasis D. development E. temperature |
E. Temperature |
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If a man has normal vision and his wife is heterozygous for colorblindness how many of their sons will be color blind? A. 100% B. 50% C. 25% D. ¾ E. 0% |
B. 50% |
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If a man has normal vision and his wife is heterozygous for colorblindness how many of the daughters will be colorblind?A. 100% B. 50% C. 25% D. ¾ E. 0% |
E. 0% |
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If two individuals have a colorblind daughter which of the following must be true? A. The mother has normal vision B.The father has normal vision C. The mother is colorblind D.The father is colorblind E. Her brothers are all colorblind
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D. The father is colorblind |
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A parental generation of two pure breeding white pea plants produces an F1 generation that are all purple. When the F1 are self-fertilized the produce an F2 with a proportion of 9/16 to 7/16. What pattern of inheritance does this represent? A. Complete dominance B. Incomplete dominance C. Codominance D. Epistasis E. Sex linkage |
D. Epistasis |
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14. Which of the following was a finding of Avery's work with Streptococcus pneumoniae that most of the scientific community found difficult to accept? A. bacteriophages inject DNA into bacteria B. DNA is a double helix C. one gene codes for a single enzyme D. Griffith's transforming factor was DNA E. babies are found under cabbage leaves |
D. Griffith's transforming factor was DNA |
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If a cell has 10% cytosine in it's nucleus, what is the amount of thymine present? A. 10% B. 20% C. 30% D. 40% E. it is impossible to determine without further information
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D. 40% |
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Which of the following is the major contribution of Watson and Crick? A. the structure of a DNA molecule B. genes code for polypeptides C. DNA is the hereditary material D. Griffith's transforming factor was DNA E. bacteriophages inject DNA into bacteria
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A. The structure of a DNA molecule |
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Who was the first to discover that DNA might be a helix using x-ray diffraction crystallography? A. Rosalind Franklin B. Maurice Wilkins C. James Watson D. Linus Pauling E. Spongebob Squarepants |
A. Rosalind Franklin |
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Prior to the 1940's the genetic material was first thought to be: A. RNA B. DNA C. protein D. lipids E. carbohydrates |
C. Protein |
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The "sides" of a DNA helix are composed of: A. a 3 carbon glycerol molecule B. sugars and phosphatesC. nitrogenous bases D. protein E. wood |
B. Sugars and Phosphates |
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1. You are breeding different varieties of roses in your garden. When you cross a true-breeding yellow "Texas Beauty" rose with a true-breeding "Ruby" red rose, you get all red roses. But when you cross a "Texas Beauty" yellow with the yellow variety "Jealousy," you get a 9:7 ratio of red to yellow flowers! What can you conclude from these results? A. The environment, and not genes, influences pigment in these rose varieties. B. There are epistatic interactions between at least two genes for rose pigment. C. The red allele is dominant to the yellow allele. D. There is a mutation in the gene for yellow pigment in the "Jealosy" variety. E. There is no recessive allele for the red pigment gene. |
B. There are epistatic interactions between at least two genes for rose pigment. |
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A gene for sweat gland production is found on the X chromosome. If a man who lacks sweat glands marries a woman who has normal sweat glands, what will be the phenotype of their children? A. All of the boys will lack sweat glands. B. All of the girls will lack sweat glands. C. The girls will have sweat glands in some areas, but lack sweat glands in others. D. All of the boys will have sweat glands. E. All the boys will have sweat glands, and the girls will have sweat glands in some areas but not others. |
E. All the boys will have sweat glands, and the girls will have sweat glands in some areas but not others. |
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The inheritance pattern where two or more genes do not assort independently because they are close together on the same chromosome is called: A. Mendelian inheritance B. epistasis C. genomic imprinting D. linkage E. dominance |
D. Linkage |
