Genetics practice test 1

Genetics practice test 1 - Biol 3301 Exam #1 1) Which of...

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Biol 3301 Exam #1 1) Which of the following is not a trait of a Good Genetic Model System a. fast generation time b. has many redundant gene families c. inexpensive to culture d. Facile manipulation of genome e. has a large collection of mutants 2) A phenotype is a. The complete compliment of genes in a species b. The outwardly manifested trait c. An individuals internally encoded trait as represented by specific alleles d. A graphic display of inheritance patterns e. When a trait is not encoded by the nucleus 3) Variability in phenotype can be caused by a. Differences in a single gene sequence b. Environmental factors c. Developmental noise d. Differences at Quantitative trait loci e. All of the above 4) In Meiosis, the stages of Prophase I are: a. Leptotene, Zygotene, Pachytene, Diplosomia, Telekinesis b. Leptin, Zygotes, Polydactyl, Diplosomia, Diakinesis c. Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis d. Leptin, Zygotes, Pachytene, Diplosomia, Diakinesis e. Leptotene, Zygosis, Polydactyl, Diplotene, Diakinesis Question 5-7: Drosophila melanogaster have four pairs of chromosomes. 5) What is the ploidy level at Metaphase II of meiosis? a. 8n b. 1n c. 4n d. 2n e. 0n 6) How many chromatids are present per cell at Telophase I of meiosis? a. 8 b. 16 c. 4 d. 2 e. 0 7) What is the ploidy level at Prophase of Mitosis? a. 8n b. 4n c. 1n d. 2n e. 0n Questions 8-11: You have performed the following trihybrid test cross in maize with the colorless (c), waxy (wx) and shrunken (sh) loci. You need to figure out the map order and distance between the loci.
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Cc Wxwx Shsh X cc wxwx shsh (tester) Colored, Starchy, Plump colorless, waxy, shrunken You record the following progeny: Trihybrid Gamete Phenotype of Progeny # of Progeny C Wx Sh Colored, Starchy, Plump 4 c wx sh colorless, waxy, shrunken 2 c wx Sh colorless, waxy, Plump 2708 C Wx sh Colored, Starchy, shrunken 2538 c Wx Sh colorless, Starchy, Plump 626 C wx sh Colored, waxy, shrunken 601 c Wx Sh colorless, Starchy, shrunken 116 C Wx sh Colored, waxy, Plump 113 Total 6708 8) Which of the following gamete genotypes is a parental (non-recombinant) class of the Trihybrid parent: a. C WX sh b. C WX Sh c. C wx Sh d. C wx sh e. c Wx sh 9) Which of the following gametes represents a double recombinant event: a. C WX sh b. C WX Sh c. C wx Sh d. C wx sh e. c Wx sh 10) Which of the follow maps is correct:
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11) Assume that the expected frequency of double recombinants is 0.00644. What is the coefficient of coincidence? a.
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This note was uploaded on 02/04/2010 for the course BIOL 3301 taught by Professor Gunaratne during the Fall '05 term at University of Houston.

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Genetics practice test 1 - Biol 3301 Exam #1 1) Which of...

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