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5 Written questions

5 Matching questions

  1. diploid
  2. zygote
  3. asexual reproduction
  4. chromatin
  5. interphase
  1. a The 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.
  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 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.
  4. d The diploid cell produced by the union of haploid gametes during fertilization; a fertilized egg
  5. e A cell containing two sets of chromosomes (2n), one set inherited from each parent.

5 Multiple choice questions

  1. A cell containing only one set of chromosomes (n).
  2. The second gap, or growth phase, of the cell cycle, consisting of the portion of interphase after DNA synthesis occurs.
  3. A chromosome that is not directly involved in determining sex; not a sex chromosome.
  4. A method of asexual reproduction by "division in half." In prokaryotes, it does not involve mitosis, but in single-celled eukaryotes that undergo this, mitosis is part of the process.
  5. The 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.

5 True/False questions

  1. mitosisA modified type of cell division in sexually reproducing organisms consisting of two rounds of cell division but only one round of DNA replication. It results in cells with half the number of chromosome sets as the original cell.

          

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

          

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

          

  4. gene locusspecific location of a gene on a chromosome

          

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

          

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