test4b - GENE 3200 Summer 2010 Bedell Exam 4 July 26 vB (w/...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
GENE 3200 – Summer 2010 – Bedell Exam 4 – July 26 – vB (w/ asterisk) ID no. 810______ KEY-revised 7/28 ___________ * 1 Write your ID number (810 number, NOT SSN) on every page. Write your initials on the first page only. All of the multiple choice questions have only one correct answer. The exam should be completed in ink. Regrades will not be given if you write in pencil. All requests to re-grade an exam must be made in writing to Dr. Bedell within 48 hours of the grades being posted on WebCT. The original key had an incorrect answer for #14. 1. (3 pts) In a translocation heterozygote, which segregation pattern results from disjunction? A. Adjacent-1 B. Adjacent-2 C. Alternate D. A and B E. B and C F. A and C G. A, B, and C H. Neither A, nor B, nor C 2. (3 pts) A chromosomal abnormality in which the centromeric regions of two non-homologous acrocentric chromosomes become fused to form a singular centromere is known as a(n) ___________. A. reciprocal translocation. B. nonreciprocal transversion. C. Philadelphia translocation . D. Robertsonian translocation . E. inversion. 3. (3 pts) Which is NOT a possible consequence of a transposable element (TE)? A. Inactivation of a gene through insertion of a TE into a coding region of a gene. B. Generation of a nonconservative substitution. C. Altered expression of a gene through insertion of a TE into a regulatory sequence. D. Reversion of a mutant phenotype by precise excision of a TE. E. A chromosomal rearrangement through unequal crossing-over between two TEs. 4. (1 pt). True or false. During transposition of a retroposon, the original copy of the retroposon is retained and a new copy inserts in another location. 5. (1 pt) True or false. Barbara McClintock discovered the chromosomal translocation that causes chronic myelogenous leukemia in humans. 6. (3 pts) Triploid organisms usually result from which of the following? A. Unequal disjunction during embryogenesis. B. An extra round of mitosis in gametes. C. The union of haploid and diploid gametes. D. Fusion of three gametes simultaneously. E. None of the above. 7. (1 pt). True or false . Nondisjunction can occur in meiosis but not in mitosis . 8. (2 pts) The red fox species has 17 pairs of large chromosomes and the arctic fox species has 26 pairs of smaller chromosomes. If a new species formed from the hybridization of these two species, what do you expect to be the chromosome number in somatic cells (not the germ cells) of the hybrid? Answer: 2(17 + 26) = 86 9. (1 pt) True or false . The new hybrid species derived from a red fox and an arctic fox (see previous question) would be an allopolyploid .
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
GENE 3200 – Summer 2010 – Bedell Exam 4 – July 26 – vB (w/ asterisk) ID no. 810______ KEY-revised 7/28 ___________ * 2 10. (1 pt) True or false . Polyploids with an odd number of chromosomes are more likely to be fertile than those with an even number. 11.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/01/2010 for the course MIBO MIBO 3500 taught by Professor Dustman during the Summer '09 term at University of Georgia Athens.

Page1 / 8

test4b - GENE 3200 Summer 2010 Bedell Exam 4 July 26 vB (w/...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online