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Course: BIO 201, Fall 2009School: San Diego State
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Meiosis 1) occurs in all cells of an organism that reproduces sexually. T / F 2) Mitosis maintains genetic material while meiosis promotes genetic diversity. T / F 3) The progeny of a test cross will be A) recessive and dominant if the unknown parent is heterozygous dominant. B) recessive and dominant if the unknown parent is homozygous dominant. C) All dominant if the unknown parent is heterozygous recessive....
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Meiosis 1) occurs in all cells of an organism that reproduces sexually. T / F 2) Mitosis maintains genetic material while meiosis promotes genetic diversity. T / F 3) The progeny of a test cross will be A) recessive and dominant if the unknown parent is heterozygous dominant. B) recessive and dominant if the unknown parent is homozygous dominant. C) All dominant if the unknown parent is heterozygous recessive. D) All recessive if the unknown parent is heterozygous recessive. E) recessive and dominant if the unknown parent is homozygous recessive. 4) Three genes are linked on a chromosome. Breedings were performed in order to determine the genetic map of the three genes. The results of the crosses were: AABB X aabb : 460 AaBb 460 aabb 40 Aabb The correct map is: 40 aaBb A) A 8 cM B 2 cM C BBCC X bbcc : 490 BbCc B) B 8 cM C 2 cM - A 490 bbcc C) A 10 cM B 8 cM C 10 Bbcc D) C 8 cM A 2 cM - B 10 bbCc E) None of the above AACC X aacc 450 : AaCc 450 aacc 50 Aacc 50 aaCc 5) The following P1 cross is performed : AABB X aabb. The F1 progeny are then crossed to produce the F2 offspring. The predicted Mendelian ratios are observed. Which of the following statements is not true?: A) The F2 genotype ratio is 1:2:1:2:4:2:1:2:1. B) The F2 phenotype ratio is 9:3:3:1. C) There are four different F2 phenotypes. D) There are no F2 offspring that are homozygous recessive for both alleles. E) There are some F2 offspring that are homozygous recessive for both alleles. 6) In a monohybrid cross, the F2 generation has a...
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