98fin 2 - University of Florida Fort Lauderdale AGR 3303 -...

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University of Florida Fort Lauderdale AGR 3303 - Genetics Final Exam 14 Dec 1998 Exam results will be available on Thursday 17 December 1998. If you want your score posted, you must supply a four- to ten-character code word, which may contain numbers, but may not be offensive by community standards. In addition, final exams will be mailed to whatever address I have for you, unless you explicitly request otherwise. ~ Phil Busey, turf @ ufl.edu Multiple choice (120 pts.) Please read these carefully . One and only one response (a, b, c, d, or e) completely and correctly answers the question, or completes the statement. Circle the appropriate response. Make sure your circle is unambiguous. 1. A man with human blood isoagglutinogen genotype AO conceives a son with a woman with genotype AO. Their son is most likely to have blood genotype: a. A b. O c. AO d. AA e. OO 2. When two genes occur closely on the same chromosome, the dihybrid frequencies obvious in the F 2 generation violate the following Mendelian postulate: a. segregation b. independent assortment c. mutation d. dominance e. random mating Student name: Code word 4-10 letters or numbers: Office door Web site
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AGR 3303 - Genetics, Univ Florida Page 2/12 3. A class of mutations influenced by the addition or deletion of a nucleotide is called: a. reverse b. missense c. subsitution d. frame shift e. redundant 4. DNA polymerase is active in: a. transcription b. translation c. replication d. segregation e. recombination 5. DNA replication (synthesis) occurs during: a. prophase b. metaphase c. anaphase d. telophase e. interphase 6. Chromosome reduction occurs during a. the first division of mitosis b. the second division of mitosis c. the first division of meiosis d. the second division of meiosis e. interphase 7. The genetic distance A-B is 10 map units, B-C is 5 map units, and A-C is 18 map units. Among the progeny of aBC x Abc the expected percentage of ABC offspring is: a. 5 b. 10 c. 15 d. 18 e. 28 8. Given a diploid species with an autosomal locus with 4 alleles, how many different homozygous genotypes can be formed? a. 2 b. 4 c. 6 d. 10 e. 15
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AGR 3303 - Genetics, Univ Florida Page 3/12 9. Given a diploid species with 22 chromosomes and XY sex determination, how many autosomes are there in the gamete? a. 2 b. 4 c. 6 d. 10 e. 15 10. If two segregating loci contribute to plant height in an additive polygenic manner, and the parental cross is AABB x aabb, the number of possible heights in the F 2 is: a. 0 b. 1 c. 4 d. 5 e. 16 11. In guinea pigs, black coat color (governed by allele B) is dominant and white (b) is recessive. When heterozygous black pigs are intercrossed, approximately what frequency is expected to be homozygous.: a. 0 b. 1/4 c. 1/3 d. 1/2 e. 3/4 12. A mutation can cause a nucleotide substitution, but have no effect on the amino acid sequence, because of: a. homozygosity b. heterozygosity c. Ambiguity d. redundancy e. homology 13. The genetic code is: a. a method of replication b. a method of transcription c.
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98fin 2 - University of Florida Fort Lauderdale AGR 3303 -...

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