midterm II-key

midterm II-key - Name Student ID Bio 50 Midterm I 100...

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Name ______________________________ Student ID # ________________________ Bio 50 Midterm I 100 points total Signature for Honor Code ________________________________ Part I Multiple Choice (14 points; 2 each) 1. An important class of proteins that regulate progression through the cell cycle are? A) progressins B) cyclins C) advancins D) nucleoporins E) circulins 2. The phenomenon that describes an individuals phenotype being determined by their mothers genotype is? A) dominance B) pseudodominance C) maternal effect D) maternal inheritance E) linkage 3. A three-strand double crossover between two linked heterozygous loci in cis configuration will result in what tetrad pattern A) parental ditype B) nonparental ditype C) triplotype D) tetratype E) nullotype 4. When the homologs in an allotetraploid pair at meiosis they can form? A) bivalents B) trivalents C) tetravalents D) univalents E) all these (A-D) 5. Which of the following can cause genes to move from one linkage group to another A) inversions B) deletions C) homologous crossing over D) translocations 6. Which of the following types of genes are expressed last in the normal course of Drosophila development? A) egg polarity genes B) segmentation genes C) gap genes D) homeotic genes E) recessive genes 7. Plastid genomes have chromosomes that are? A) circular B) single stranded C) made of RNA D) lacking genes E) inactivated in females - 1 -
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Name ______________________________ Student ID # ________________________ Bio 50 Midterm I 100 points total 8. (20 points) You are working on three traits in caterpillars – blue color (B) which is dominant to white color (b); fuzzy (F) which is dominant to smooth (f); and poisonous (P) which is dominant to harmless (p). You cross an individual that is heterozygous for all three loci to an individual that is homozygous recessive for all three loci and obtain 2000 progeny distributed into the following classes: B F p 764 b f P 758 B f p 138 b F P 134 B f P 96 b F p 88 b f p 12 B F P 10 A. (9 points) Calculate the map distance between each pair of linked loci
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midterm II-key - Name Student ID Bio 50 Midterm I 100...

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