Chromosomal Rearrangements

Chapter 13—Chromosomal Rearrangements and Changes in Chromosome Number Reshape Eukaryote Genomes

Fill in the Blank

|1. |Events that reshape genomes by reorganizing the DNA sequences within one or more chromosomes are known as ____________________. |
|Ans: |rearrangements |
| |Difficulty: 2 |

|2. |____________________, duplications, inversions, translocations, and movements of transposable elements are all types of |
| |rearrangements of chromosomal material.
|Inversions that exclude the centromere are termed ____________________. |
|Ans: |paracentric |
| |Difficulty: 2 |

|10. |A crossover product that lacks a centromere is known as a(n) ____________________fragment. |
|Ans: |acentric |
| |Difficulty: 2 |

|11. |The type of large-scale mutation in which parts of two different chromosomes trade places is a ____________________
|
|Ans: |reciprocal |
| |Difficulty: 2 |

|12. |____________________ is the enzyme that catalyzes transposition. |
|Ans: |Transposase |
| |Difficulty: 2 |

|13. |Organisms with four copies of a particular chromosome (2n+2) are ________________. |
|Ans: |tetrasomic |
| |Difficulty: 3