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Biology Semester 2 Final

Quiz by Brooke Smitha

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72 questions
Show answers
  • Q1
    Normal human males develop from fertilized eggs containing which of the following sex chromosome combinations?
    XX
    XO
    XY
    OO
    30s
  • Q2
    The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human egg cell is
    46
    23
    12.5
    92
    30s
  • Q3
    A haploid cell is one that
    has chromosomes found in pairs.
    is designated by the symbol 2n.
    has one set of chromosomes.
    has two homologues of each chromosome.
    30s
  • Q4
    The process shown is
    Question Image
    mitosis.
    dominance.
    chromosomal mutation.
    meiosis.
    30s
  • Q5
    The passing of traits from parents to offspring is called
    heredity.
    maturation.
    genetics.
    development.
    30s
  • Q6
    The scientific study of heredity is called
    crossing-over
    genetics.
    pollination
    meiosis
    30s
  • Q7
    An allele that is always expressed whenever it is present is called
    superior.
    recessive.
    phenotypic.
    dominant.
    30s
  • Q8
    The phenotype of an organism
    occurs only in dominant individuals.
    cannot be seen.
    is the physical appearance of a trait.
    is used to represent its genetic composition.
    30s
  • Q9
    If an individual possesses two recessive alleles for the same trait , the individual is said to be
    haploid for the trait.
    homozygous for the trait.
    mutated.
    heterozygous for the trait.
    30s
  • Q10
    Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is heterozygous for tallness?
    T
    TT
    Tt
    tt
    30s
  • Q11
    In humans, having freckles (F) is dominant to not having freckles (j). The inheritance of these traits can be studied using a Punnett square similar to the one shown. The child represented in box 1 in the Punnett square would
    Question Image
    have an extra freckles chromosome.
    not have freckles.
    be homozygous for freckles.
    be heterozygous for freckles.
    30s
  • Q12
    If a characteristic is sex-linked, the gene for it is found on
    a sex chromosome.
    an autosome.
    a linked chromosome.
    an allele.
    30s
  • Q13
    a diagram in which several generations of a family and the occurrence of certain genetic characteristics are shown is called a
    pedigree.
    monohybrid cross.
    Punnett square.
    family karyotype.
    30s
  • Q14
    Molecules of DNA are composed of long chains of
    fatty acids.
    amino acids.
    nucleotides.
    monosaccharides.
    30s
  • Q15
    A nucleotide consists of
    a sugar, an amino acid, and starch.
    a sugar, a phosphate group, and a nitrogen base.
    a starch, a phosphate group, and a nitrogen base.
    a sugar, a protein, and adenine.
    30s

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