Mixed Modes of Inheritance Name: ______
Types: Simple, Codominant, Incomplete, Sex-Linked and Mult-Allelic
Complete each problems—answer each section completely.
1. In fruit flies, long wings are dominant to short wings. Complete a cross between a short winged male and a heterozygous female.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
Genotypic Ratio:
Phenotypic Ratio:
2. Jamie has blue and yellow flowers in her garden. She knows they can produce green offspring. Show a cross between a pure blue and a pure yellow flower.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What percent of their offspring will be blue? ______Green? ______Yellow? ______
3. Jamie now wants to cross a green flower with a yellow flower—what will their offspring look like? Blue? ______Green? ______Yellow? ______
4. Some wildcats can have blue stripes and purple spots. Cross a male with blue stripes with a females that has both blue stripes and purple spots.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What percent of their offspring will be Blue Stripes? ______Purple Spots? ______Both Blue Stripes and Purple Spots? ______
5. A man who is not bald marries and has children with a woman who is not bald but her father was.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What percent of their offspring will be bald? _____What percent of boys? _____ What percent of girls? ______
6. Huntington’s Disease is a disease that can kill you even if you only inherit one copy of the faulty gene. It is not carried on the sex chromosomes and leads a person lose all ability to control their nervous system even the nerves that send signals to keep us alive. Cross a man that does not have this diseas with a woman who is heterozygous and will die from the disease.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What percent of their children will inherit at least one copy of this deadly gene?
If you only need one copy to get the disease—do you think its dominant or recessive?
7. Calico cats can only be female. Calico cats have both orange and black splotches on their white coats. The gene located on the X Chromosomes can either code for black or orange splotches. White is present regardless of the information on the X Chromosome. Show a crosss between an orange splotched male and a calico female.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What percent of their male kittens will have black splotches? ______orange splotches? ______calico? ______
What percent of their female kittens will have black splotches? ______orange splotches? ______calico? ______
8. Ooomaph Loompah’s have blue or orange faces. If they inherit one blue gene they will have a blue face, only if they inherit two orange genes will they have orange faces. Show a cross between an oranged faced male and a heterozygous female.
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square:
What is the genotypic ratio?
What is the phenotypic ratio?
9. A woman and a man both have A blood and they have three children. Two have O blood and one has A blood. Complete a cross to show how that is possible:
Parent Genotypes: ______
Type of Inheritance: ______
Punnett Square: