1. HEREDITY

2. Genotype: The genetic makeup of an organism. Phenotype: Observable genetic traits. Dominant: A genetic trait that is expressed with the presence of only one gene. Recessive: A genetic trait that is expressed only with the presence of both genes.

4. Dominant and Recessive Green: Dominant to all colors GG Yellow: Co-Dominant to RedYY Red: Co-Dominant to Yellow RR Orange: Combination of Red & Yellow RY

5. PUNNET SQUARE A AA b Ab A b bb A=Dominant B=Recessive

6. Colors Genotype GG RR GY YY GR YR Phenotype Green Red Green Yellow Green Orange

7. Fish Color Based on the answers you gave in the table above, answer the questions below. (You may use Punnett Squares if you wish.) Can two red fish mate and have green offspring? Why or why not? Can two orange fish mate and have red offspring? Why or why not? Can two green fish mate and have orange offspring? Why or why not?

8. Offspring1stColor2ndColor3rdColor4thColor exampleG/RGreen 1 2 3 4 Total Numbers Green Yellow Red Orange

9. Questions Hatchery fish populations often have less genetic biodiversity than wild fish populations. How might lowered biodiversity affect a fish population’s ability to adapt to environmental disasters such as the pollution disaster described in this simulation?

10. Questions If the fish from a particular stream have become genetically adapted to their home stream over many generations, what might happen if their fertilized eggs are used to “restock” a different stream that has become depleted of fish?

11. Questions Can you think of any examples from the real world where lowered genetic diversity is impacting a species’ ability to survive?

12. EARLOBES DominantRecessive D_ dd

13. ROLLED TONGUE DominantRecessive D_ dd

14. WIDOW’S PEAK DominantRecessive D_ dd

15. FRECKLES DominantRecessive D_ dd

16. EYE COLOR DominantRecessive D_ dd

17. CYSTIC FIBROSIS Not Having the Condition is Dominant Having the Condition is Recessive 1/2500 in Caucasians SICKEL CELL DISEASE Not Having the Condition is Dominant Having the Condition is Recessive 1/400 in African Americans

18. BLOOD TYPE A,B,AB & 0 A B Co-dominant O Recessive Type A=AA or AO, Type B=BB or BO Type AB=AB, Type O=OO

19. BLOOD Rh FACTOR Rh Positive is Dominant Rh Negative is Recessive

20. COLOR BLINDNESS No Color Blindness is Dominant Color Blindness is Recessive 1/12 Males, 1/250 Females

21. DWARFISM AA Genotype is fatal (usually still born) Aa is a Dwarf aa is Normal A is Dominant a is Recessive

22. HUNTINGTON’S DISEASE Having the Condition is Dominant Not Having the Condition is Recessive 1/25,000 the Population HEMOPHILA Not Having the Condition is Dominant Having the Condition is Recessive

23. ALBINISM Not Having the Condition is Dominant Having the Condition is Recessive

24. CLEF CHIN DominantRecessive D_ dd

25. CONNECTED EYEBROWS DominantRecessive D_ dd

26. One in a Million Chance