5. RR WW RW

7. With incomplete dominance, neither allele is completely dominant nor completely recessive. --> Heterozygous phenotype is an ______________ between the two homozygous phenotypes = + intermediate

9. With codominance, both alleles are dominant and equally expressed. --> both alleles express themselves in a heterozygous organism for example, and sickle cell anemiaroan cows + = fully

11. Sickle cell Normal red blood cell

13. Changes in hemoglobin cause red blood cells to change to a sickle shape. People who are heterozygous for the trait have both normal and sickle-shaped cells.

15. Sickle red blood cells clump together and stick to the walls of blood vessels, blocking blood flow. This can cause severe pain and permanent damage: brain, heart, lungs, kidneys, liver, bones, and spleen.

16. Traits that are influenced by ____________________ for example, skin color, height, eye color, and fingerprint pattern multiple gene pairs

19. http://www.youtube.com/watch?v=pmZV36XgXaI

20. form of inheritance that is determined by _________ __________ for example, human blood types -Type A -Type B -Type AB -Type O more than 2 alleles

21. Antigens are ___________ foreign to the _____. Rh factors can either be ___________ or _____________ + - substancesbody