1. Look at the Parent and F1 generation above
Look at the Parent and F1 generation above. Predict possible genotypes for the parent flowers. Draw a Punnett Square to demonstrate the possible offspring and what their phenotypes should be.

2. **A blending effect occurs**

3. Red flower x white flower → pink flowers
Incomplete Dominance
Neither allele completely dominant
Heterozygous genotype somewhere between homozygous phenotypes (blending)
Example:
Red flower x white flower → pink flowers

4. Examples… Mike Wazowski is a resident of Monsters, Inc. Land.
His Dad is BB for blue color
His Mom is YY for yellow color
What do you think Mike’s genotype is???
What does this mean about inheritance of skin color in this species of monster?

6. Codominance Both alleles contribute to phenotype
See both phenotypes in offspring
Examples:
Black x white chicken → speckled chicken

7. Examples…
The Wiley Coyote Bird of the deserts has a black and red stripes on its body.
Homozygous BB is black stripes only
Homozygous RR is red stripes only
Heterozygous BR is ???

8. Red horse x white horse results in ROAN – both colors expressed
Examples… x
Red horse x white horse results in ROAN – both colors expressed

9. Multiple Alleles Genes that are controlled by more than 2 alleles
Example: Rabbit coats – 29 different alleles determine coloration

10. Ex: Blood Types

11. Polygenic Traits
Traits controlled by interactions between 2 or more genes
Different combos, diff phenotypes
Example: Skin color Height

13. Sex Linkage Ex: Color-blindness
Gene carried on X - more males than females. Why?
* Males – XY
* Females – XX
Males have ONE X → ALL x-linked traits are expressed even if they are recessive
Second X can mask trait in females

14. Trait:
Sight: Normal – E
colorblind – e
Gender: Male – Y
Female – X
Normal Vision Male: XEY
Carrier Female: XEXe

15. Disorder in which blood does not clot normally
Example: Hemophilia
Disorder in which blood does not
clot normally