Question

2 BIO 302 MIDTERM (CH 7-8) 1 Cause of familial Down syndrome is 2. Gain of single chromosome leads to 7 Cotton plant is an example of Triploidy B. Trisomy C.Translocation A Trisomy B. Allopolyploidy C. Amphidiploidy D. Pentaploidy A. Diploidy B.Triploidy C. Tetraploidy D. Trisomy E Monosomy What is "normal chromosome number? 18. What doesn't happen in endopolyploidy'or 3. Diploidy B. Triploidy C. Tetraploidy D. Trisomy EMonosomy 4. Multiple of same genome could be termed as A. Division of cytoplasm B. Nuclear division C. Zygotic fusion D. Meiosis Allopolyploidy yploidy 19. How many coples arent suficient to survive in 5. In nondisjunction haplosufficlency (example one autosome missingl? A. Homologous pairing takes place in telophase A 1 B2 C.3 D4 B. Homologous pairs separate 20. "Robertsonian translocation" involves one-way C. Paired homologs fail to disjoin movement (no-exchange) between D. Crossing over doesn't take place DSCR is located on chromosome number 6. B. Non-homologous C. Sister of same chromosome D. No-sister of homologous E. Breaks at ends of non-homologous acrocentric A 13 B. 18 C 21 D.X 7. Ci-du-chat is resulted because of A Translocation in chromosome 13 B. Deletion in chromosome 5 21. Fraple ses' takes place in cultured cols that lackc C. Trisomy 21 A Histidine B. Ascorbic acikd C. Folic acid D. Argenic acid D. Monosomy of X chromosome 8. Identify a "Kleinfelter syndrome A 45X B.47XXX C. 47XXY D. 47XYY 9. Identify 'Turner syndrome 10. identiy Edward syndrome from trisomy of chromosome 11, what is source of 95% of tisomy cases? 22. Which of the following is considered as cause of most common form of inherited "mental retardation? A. Down's syndrome B. Familial Down's syndrome C. Martin-Bell Syndrome D. Cr-Du-Chat syndrome A 13 B 18 C. 21 D.X A Sperm B. OvumC. Brain neurons D. Acrosomal enzymes 12. At what critical matemal age, when incidence of Down's syndrome is 3 per 1000 from where it exponentialy 23. What form of cancer is linked with Fragile-Sites? 24. Copy Number Variants (CNVs) represents quantitative A. Brain BLiver C, Lung D. Muscle increases? dfferences in number of what molecule? A 30 B. 35 C.40 D. 44 A Peptides B. Peptones C. Proteins D. DNA 13 By what technique, fetal cells are obtained from maternal 25. 0.7 % ofentre genome of what molecule of haploid A. CVS B. Amniocentesis C. NIPGD D. IVF copies of Eschenichia col is present? A mRINA B.tRNA c. rONA D. MIDNA 14. "Reciprocal translocation" involves exchange of segments between 26. What inversion type does NOT change length of two chromatids segments between: arms of chromosome? A Homologous B. Non-homologous C. Sister of same chromosome D. No-sister of homologous E. Breaks at ends of non-homologous acrocentric A. Compensation loop B. Paracentric C. Pericentric D. Epicentromere 27. What inversion crossing over produces a recombinant dicentric chromatid in? 15. What percent of natural conceptions is "trisomy? A Compensation loop B. Paracentric C. Pericentric A. 2 B. 20 C. 78 D. 80 16. Number of chromosomes in tetraploidy is: A 45 B47 C69 D. 92

Answer 1

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