BIO 310-Chapter 6: Chromosome Variation Quiz Questions

BIO 310-Chapter 6: Chromosome Variation Quiz Questions 1. Each functional eukaryotic chromosome has a – a. Two centromere & one telomere b. One centromere & two telomere 2. Acrocentric chromosomes have – a. A short arm and satellite b. A long arm and satellite 3. Chemical name colchicine which can disrupt spindle formation used to prevent cells from entering to – b. Anaphase b. Metaphase 4. Chromosome rearrangements alter the – b. Structure of chromosomes b. Number of chromosomes 5. Chromosome rearrangements can arise through errors in cross-over. a. True b. False 6. During duplication of part of chromosome – a. Genetic information may miss b. no genetic information missing 7. Duplication of part of chromosome can have severe consequences when – a. Precise balance of a gene product is critical to cell function b. Precise balance of a gene product is not critical to cell function 8. When a single copy of a gene is not sufficient to produce a wild-type phenotype, it is called – a. Pseudodominance b. Haplo-insufficiency 9. Position effects refer to the expression of a gene when its location in a chromosome – a. Change b. remain in same location 10.Crossing-over within an inversion in an individual heterozygous for a for a pericentric or paracentric inversion lead to – A. Balanced gametes and recombinant progeny B. Unbalanced gametes and no recombinant progeny 11.Aneuploidy is -. a. A change in the number of number individual chromosomes b. A change in the of number of chromosomes sets 12.Chromosome nondisjunction may occur during – a. Mitosis b. Meiosis I c. Meiosis II d. All stages 13.Tetrasomy can be represented as – a. 2n + 4 b. 2n + 2 b. 14.Aneuploidy of human sex chromosomes is less tolerated than aneuploidy of autosomal chromosomes. a. True b. False 15.A diploid organism has 2n=36 chromosomes. How many chromosomes will be found in a trisomic member of this species? a. 37 b. 38 16.Female mammals are born with primary oocytes suspended in – a. Prophase I of meiosis I b. Prophase II of meiosis II 17.During oogenesis second meiotic division take place when – a. After egg and sperm fused b. before egg and sperm fused 18.Alloploidy arises from hybridization between – a. Two different species b. two same species 19.Parthenogenesis is a type reproduction in which the animals develop from – a. Fertilized eggs b. Unfertilized eggs 20.Translocation refer to movement of a chromosome segments to a – a. Nonhomologous chromosome b. another region of same chromosome c. Both Chapter 7. Bacterial and Viral Genetic Systems Quiz questions 1. Archaea are more similar to - a. Eubacteria b. Eukaryote