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Past Exam for BIOL 3416 - Genetics with Zhang at Texas Tech (TTU)

Exam Information

Material Type:Exam
Professor:Zhang
Class:BIOL 3416 - Genetics
Subject:BIOLOGY
University:Texas Tech University
Term: 2008
Keywords:
  • Pseudodominance
  • Anthocyanin
  • Codominance
  • Immediately
  • Transversion
  • Signal Hypothesis
  • Complementarity
  • Transitions
  • Corepressor
  • Suppression
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Sample Document Text

1 Genetics (Biology 3416) Sample Test Part I 1. The cross AaBb x AaBb is called a a. dihybrid cross; b. backcross; c. reciprocal cross; d. testcross; e. monohybrid cross 2. Assuming codominance for both genes, what is the phenotypic ratio of the offspring of the cross AaBb x AaBb? a. 1:2:1:2:4:2:1:2:1; b. 9:4:1; c. 9:3:3:1; d. 3:6:3:1:2:1; e. 1:2:1 3. The cross AaBb x aabb is called a a. dihybrid cross; b. backcross; c. reciprocal cross; d. testcross; e. monohybrid cross 4. Assuming complete dominance, what is the phenotypic ratio of the offspring of the cross AaBb x aabb? a. 1:1; b. 3:1; c. 1:1:1:1; d. 9:3:3:1; e. 1:2:1 5. Corn has a color gene and a height gene with the following phenotypes: CC and Cc, purple; cc, white; TT, tall; Tt, medium; tt, dwarf. If a dihybrid is self-fertilized, what is the resulting phenotypic ratio? a. 1:2:1:2:4:2:1:2:1; b. 2:3:6:3:2; c. 3:3:3:3:3:1; d. 3:6:3:1:2:1; e. 3:1 6. ...

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