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DNA replication takes place during..a. Interphase of mitosisb. Interphase in both mitosis and meiosisc. Interphase in meiosis I and IId. All of the above
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B. Interphase in both mitosis and meiosis
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Parent cell's diploid state is 6
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Mitosis
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The synaptonemal complex is a complex of proteinsa. that allows crossing over to occurb. binds homologous pairs of chromosomes togetherc. prevents synapsis from occuring
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D. both a and b are correct
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Mendel's law of segregation states that:a. An egg or a sperm gets only one of the two alleles that are present in the somatic cells of the organismb. an egg or a sperm gets two of the alleles that are present in the somatic cells of the organismc. alleles of different genes on non-homologous chromosomes are inherited independentlyd. crossing over makes fertilization random
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A. An egg or a sperm gets only one of the two alleles that are present in the somatic cells of the organism
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In peas, plants that are true-breeding for a particular trait must be _____ for that trait.a. Homozygousb. Heterozygousc. Either homozygous or heterozygousd. Dominant
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A. Homozygous
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For Mendel's pea plants, tall (T) was dominant over dwarf (t), and purple flowers (P) were dominant over white flowers (p). A plant with genotype ttpp would have which phenotype?a. dwarf plant with white flowersb. tall plant with purple flowersc. tall plant with white flowersd. dwarf plant with purple flowers
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A. dwarf plant with white flowers
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A girl with trisomy of the 21st pair of chromosomes would be categorized as having which syndrome:a. Klinefelter'sb. Down'sc. Turner'sd. Jacob's
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Down's
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The enzyme which separates the DNA strands in preparation for replication is called:a. DNA polymeraseb. Helicasec. Primased. Ligase
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Helicase
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The enzyme used to bind the Okazaki fragments during the process of DNA replication is called:a. DNA binding proteinb. Helicasec. Primased. Ligase
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Ligase
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DNA polymerase:a. Can only add nucleotides in the 5;-3' directionb. Can only add nucleotides to a free 3' endc. Needs primers in order to add nucleotides during DNA replicationd. All of the above
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All of the above
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A eukaryotic cell lacking active telomerase would:a. be unable to take up DNa from the surrounding solutionb. be unable to identify and correct mismatched nucleotidesc. experience a gradual reduction of chromosome length with each replication cycled. have a greater potential to become cancerous
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C. experience a gradual reduction of chromosome length with each replication cycle
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Which strand would be synthesized from the following portion of a DNA parental strand during DNA replication? 3'-AACCGTAATTCG-5'a. 5' TTGGCATTAAGC 3'b. 3' TTGGCATTAAGC 5'c. 5' AACCGTAATTCG 3'd. 3' AACCGUAAUUCG 5'
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A. 5' TTGGCATTAAGC 3
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The elongation of the lagging strand during DNA synthesisa. progresses away from the replication forkb. occurs in the 3'05' directionc. produces Okazaki fragmentsd. both answers a and c are correct
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D. both answers a and c are correct
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A gene:a. is a specific segment of nucleotides in DNAb. contains only those nucleotides required to synthesize a proteinc. is synonymous with a chromosomed. is composed of mRNA
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A. is a specific segment of nucleotides in DNA
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Semiconservative replication refers to the fact that:a. DNA polymerase uses free nucleotides to synthesize new DNA moleculesb. each parental DNA strand is joined with a new strand containing complementary base pairsc. each new DNA molecule contains two new single DNA strandsd. all of the above
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B. each parental DNA strand is joined with a new strand containing complementary base pairs
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