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IB Genetics Quiz (2.6, 3.1, 3.2)

Quiz by Julia Malcolm

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11 questions
Show answers
  • Q1
    The image shows a DNA nucleotide. Which correctly identifies the parts labelled I and II?
    Question Image
    I=ribose; II=adenine
    I= base; II= phosphate
    I=ribose; 2= uracil
    I= deoxyribose; II= base
    30s
  • Q2
    Which statements are characteristics of alleles? I. Alleles differ significantly in number of base pairs. II. Alleles are specific forms of a gene. III. New alleles are formed by mutation.
    I and II only
    I, II and III
    II and III only
    I and III only
    30s
  • Q3
    The system of sex determination in chimpanzees (Pan troglodytes ) is the same as in other mammals. A chimpanzee has 48 chromosomes in the nuclei of its body cells.
    The number of genes in each chromosome
    The number of autosomes in a diploid cell
    The sex of the chimpanzee
    Whether non-disjunction has occurred
    30s
  • Q4
    Which statement correctly describes genome and proteome?
    The genome and the proteome are the same in all tissues in an organism.
    Only the genome but not the proteome can be analysed using gel electrophoresis.
    Only mutations in the proteome but not in the genome cause any variability.
    In cells of different tissues, the genome is the same while the proteome varies.
    30s
  • Q5
    What technique was used by John Cairns to measure the length of the DNA molecule in Escherichia coli?
    Chromatography
    Karyotyping
    Genome sequencing
    Autoradiography
    30s
  • Q6
    What is common to RNA and DNA?
    Deoxyribose
    Histones
    Nitrogenous bases
    Thymine
    30s
  • Q7
    Nucleic acids are polymers of nucleotides. What parts of nucleotides are joined together in both DNA and RNA to make these polymers?
    Nitrogenous bases with phosphates
    Large nitrogenous bases with small nitrogenous bases
    Nitrogenous bases with hexose sugars
    Pentose sugars with phosphates
    30s
  • Q8
    What is the same in all parts of homologous chromosomes?
    Alleles
    Sequence of genes
    Base pair sequence
    Deletions
    30s
  • Q9
    What distinguishes an allele from a gene?
    An allele is made of RNA.
    An allele is a variety of a gene.
    An allele is shorter.
    allele cannot be transferred during genetic modification.
    30s
  • Q10
    The diploid number of chromosomes in humans (Homo sapiens) is 46 and the diploid number of chromosomes in rice (Oryza sativa ) is 24. What does this indicate about diploid chromosome numbers?
    Plant species have a lower diploid number of chromosomes than animals.
    The complexity of the organisms is correlated to the diploid number of chromosomes.
    The evolutionary progress of species is determined by the diploid number of chromosomes.
    Members of a species have the same diploid number of chromosomes.
    30s
  • Q11
    A pregnant woman had fetal cells removed by chorionic villus sampling and tested. The following karyogram was produced. What does this show?
    Question Image
    The child is female with Down syndrome.
    The child is male with Down syndrome.
    The child is female without Down syndrome.
    The child is male without Down syndrome.
    30s

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