X R 18 CM E 17 CM 9 cM L P 36 CM 20 CM S 12 CM G B

MULTIPLE CHOICE: Select the BEST ANSWER for each item by ENCIRCLING THE LETTER corresponding to the best choice. 14. Which of the following is/are matched CORRECTLY? Nullisomy is 2n+2. 3. Monosomy is 2n-1. 4. Tetrasomy is 2n-2. Trisomy is 2n+1. 1. 2. Choices 1, 2, and 3 are correct. Choices 1 and 3 are correct. D. А. С. Choices 2 and are correct. B. Only choice 4 is correct. 15. Which of the following statements is INCORRECT? Stature of individuals with Turner or Klinefelter syndrome is due in part to abnormal dosage of the SHOX gene in somatic cells. Infertility of individuals with Turner or Klinefelter syndrome is likely due to abnormal dosage of X-linked genes outside the PAR regions. If nondisjunction of homologous chromosomes occurred during meiosis I, two of the resulting haploid gametes will carry both homologs and two will carry neither. If meiotic nondisjunction occurred during meiosis II, all four resulting gametes will be aneuploid. A. В. С. D. 16. The most commonly detected…

Two loci exhibit 5% recombination between them. How many map units apart are they?

Eight mutant strains of flowers were found to have white petals. Normal flowers are pink. The flower strains were all mated in pair-wise combinations to use complementation analysis to determine the number of genes involved in flower color. Data are tabulated below. + indicates wild type (pink flowers). indicates mutant (white flowers). 1 2 3 4 5 6 7 8 1 + 4 6 + + + 8 How many genes are mutated in this experiment? (Use a number not a word in the space) Which of the following strains below are defective in the same gene as strain 7? Answer yes if the strain is defective or no if it is not. Strain Defective 2 3 4