<p>Ch. 12: Patterns of Heredity & Human Genetics Quiz DO NOT WRITE ON THIS QUIZ!!! WRITE ON YOUR OWN PAPER!!!</p><p>MULTIPLE CHOICE Choose the correct letter to answer the question.</p><p>1. ______is when the alleles of both homozygous dominants are mixed together so that the heterozygous individual shows a phenotype between the two. A. codominance B. inheritance C. incomplete dominance D. dominant</p><p>2. Which of the following would a pedigree not be able to show you? A. family relationships B. age C. male or female D. individual affected by trait</p><p>3. ______is when the alleles of both homozygous dominants are expressed equally in the heterozygous individual. A. codominance B. inheritance C. incomplete dominance D. dominant</p><p>4. Chromosomes 1 – 22 are ______. A. sex chromosomes B. homozygous C. autosomes D. gametes</p><p>5. ______is when a trait is controlled by many genes. A. x-linkedB. codominance C. sex-linked traits D. polygenic inheritance</p><p>6. This disorder does not occur until 30-50 years of age. A. Tay-Sachs B. sickle cell C. Huntington’s D. Down’s syndrome</p><p>7. Tay-Sachs can cause death at the age of A. 2 B. 4 C. 6 D. 8</p><p>TRUE or FALSE Determine if the following statements are true or false. Write true or false.</p><p>8. Eye color and height are examples of polygenic inheritance. TRUE/ FALSE</p><p>9. Y-linked disorders are passed from father to daughter. TRUE / FALSE</p><p>10. Cystic fibrosis is a recessive disorder that causes mucus build up . TRUE / FALSE</p><p>11. In a pedigree, a carrier is represented by a fully shaded shape. TRUE / FALSE</p><p>12. Sex chromosomes are the 25th pair in humans. TRUE / FALSE</p><p>13. X-linked disorders are passed down from mother to son. TRUE / FALSE SHORT ANSWER List 5 of the 8 environmental factors that can influence gene expression.</p><p>14.</p><p>15.</p><p>16.</p><p>17.</p><p>18.</p><p>FILL IN THE BLANK Label the following chart of symbols from a pedigree</p><p>19</p><p>20</p><p>22</p><p>21 23</p><p>24. In order to inherit a recessive disorder, what has to happen?</p><p>25. In order to inherit a dominant disorder, what has to happen?</p><p>Bonus Questions</p><p>B1. Name a recessive disorder. B4. Name a dominant disorder.</p><p>B2. Name a X-linked disorder. B5. Name a chromosomal disorder.</p><p>B3. Name a dominant trait.</p>