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5 Written questions

5 Matching questions

  1. crossing over
  2. sporophyte
  3. diploid
  4. interphase
  5. chromatin
  1. a The period in the cell cycle when the cell is not dividing. During this phase, cellular metabolic activity is high, chromosomes and organelles are duplicated, and cell size may increase. often accounts for about 90% of the cell cycle.
  2. b 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.
  3. c 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.
  4. d A cell containing two sets of chromosomes (2n), one set inherited from each parent.
  5. e The reciprocal exchange of genetic material between nonsister chromatids during prophase I of meiosis.

5 Multiple choice questions

  1. specific location of a gene on a chromosome
  2. 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.
  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 pair of chromosomes of the same length, centromere position, and staining pattern that possess genes for the same characters at corresponding loci. One is inherited from the organism's father, the other from the mother.
  5. The synthesis phase of the cell cycle; the portion of interphase during which DNA is replicated.

5 True/False questions

  1. somatic cellsAny cell in a multicellular organism except a sperm or egg or their precursors.

          

  2. alternation of generationsThe generation of offspring from a single parent that occurs without the fusion of gametes (by budding, division of a single cell, or division of the entire organism into two or more parts). In most cases, the offspring are genetically identical to the parent.

          

  3. sex chromosomesA chromosome responsible for determining the sex of an individual.

          

  4. autosomesA 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.

          

  5. synapsisA 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.

          

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