Testing Your Recall

  1. Production of more than one phenotypic trait by a single gene is called a. pleiotropy.
  2. genetic determinism.
  3. codominance.
  4. penetrance.
  5. genetic recombination.
  6. When a ribosome reads a codon on mRNA, it must bind to the_of a corresponding tRNA.
  7. start codon b. stop codon c. intron d. exon e. anticodon
  8. The normal functions of a liver cell— synthesizing proteins, detoxifying wastes, storing glycogen, and so forth—are done during its a. anaphase.
  9. telophase.
  10. G1 phase.
  11. G2 phase.
  12. synthesis phase.

Saladin: Anatomy & I 4. Genetics and Cellular I Text I © The McGraw-Hill

Physiology: The Unity of Function Companies, 2003 Form and Function, Third Edition

154 Part One Organization of the Body

  1. Two genetically identical strands of a metaphase chromosome, joined at the centromere, are its a. kinetochores.
  2. centrioles.
  3. sister chromatids.
  4. homologous chromatids.
  5. nucleosomes.
  6. Which of the following is not found in DNA?
  7. thymine b. phosphate c. cytosine d. deoxyribose e. uracil
  8. Genetic transcription is performed by a. ribosomes.
  9. RNA polymerase.
  10. DNA polymerase.
  11. helicase.
  12. chaperones.
  13. A chaperone comes into play in a. the folding of a new protein into its tertiary structure.
  14. keeping DNA organized within the nucleus.
  15. escorting sister chromatids to opposite daughter cells during mitosis.
  16. repairing DNA that has been damaged by mutagens.
  17. preventing malignant cells from metastasizing.
  18. An allele that is not phenotypically expressed in the presence of an alternative allele of the same gene is said to be a. codominant.
  19. lacking penetrance.
  20. heterozygous.
  21. recessive.
  22. subordinate.
  23. Semiconservative replication occurs during a. transcription.
  24. translation.
  25. posttranslational modification.
  26. the S phase of the cell cycle.
  27. mitosis.
  28. Mutagens sometimes cause no harm to cells for all of the following reasons except a. some mutagens are natural, harmless products of the cell itself.
  29. peroxisomes detoxify some mutagens before they can do any harm.
  30. the body's DNA repair mechanisms detect and correct genetic damage.
  31. change in a codon does not always change the amino acid encoded by it.
  32. some mutations change protein structure in ways that are not critical to normal function.
  33. The cytoplasmic division at the end of mitosis is called_.
  34. The alternative forms in which a single gene can occur are called
  35. The pattern of nitrogenous bases that represents the 20 amino acids of a protein is called the_.
  36. Several ribosomes attached to one mRNA, which they are all transcribing, form a cluster called a/an_.
  37. The enzyme that produces pre-mRNA from the instructions in DNA is
  38. Newly synthesized proteins may be escorted to their destination in a cell by other proteins called_.
  39. At prophase, a cell has_

chromosomes,_chromatids, and_molecules of DNA.

  1. The cytoplasmic granule of RNA and protein that reads the message in mRNA is a_.
  2. Cells are stimulated to divide by chemical signals called_.
  3. All chromosomes except the sex chromosomes are called_.

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Essentials of Human Physiology

Essentials of Human Physiology

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