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5 Written questions

5 Matching questions

  1. mitosis
  2. diploid
  3. chromatin
  4. genome
  5. sex chromosomes
  1. a A process of nuclear division in eukaryotic cells conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase, and telophase. conserves chromosome number by allocating replicated chromosomes equally to each of the daughter nuclei.
  2. b A chromosome responsible for determining the sex of an individual.
  3. c The complex of DNA and proteins that makes up eukaryotic chromosomes. When the cell is not dividing, it exists in its dispersed form, as a mass of very long, thin fibers that are not visible with a light microscope.
  4. d The genetic material of an organism or virus; the complete complement of an organism's or virus's genes along with its noncoding nucleic acid sequences.
  5. e A cell containing two sets of chromosomes (2n), one set inherited from each parent.

5 Multiple choice questions

  1. The first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins.
  2. Any cell in a multicellular organism except a sperm or egg or their precursors.
  3. in a duplicated chromosome, the region on each sister chromatid where they are most closely attached to each other by proteins that bind to specific DNA sequences; this close attachment causes a constriction in the condensed chromosome.
  4. A chromosome that is not directly involved in determining sex; not a sex chromosome.
  5. In organisms (plants and some algae) that have alternation of generations, the multicellular diploid form that results from the union of gametes. it produces haploid spores by meiosis that develop into gametophytes.

5 True/False questions

  1. zygoteThe diploid cell produced by the union of haploid gametes during fertilization; a fertilized egg


  2. S phaseThe synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated.


  3. G2 phaseThe first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins.


  4. karyotypeA display of the chromosome pairs of a cell arranged by size and shape.


  5. chiasmataThe X-shaped, microscopically visible region where crossing over has occurred earlier in prophase I between homologous nonsister chromatids. they become visible after synapsis ends, with the two homologs remaining associated due to sister chromatid cohesion.