1. REVIEW FOR QUIZ PUNNETT SQUARES

2. R – red flower r – yellow flower RR rr
Red flowers are dominant to yellow flowers.
A purebred red flower X yellow flower.
What are the alleles:
R – red flower
r – yellow flower
Genotype of parents:
A purebred red flower X yellow flower. RR rr

3. ? ? ? RR YY RY R – red flower Y – yellow flower Incomplete dominance
When red flowers are crossed with yellow flowers,
the offspring produced have orange flowers.
red flower X yellow flower orange flower RR ? YY ? RY ?
Genotypes?
What are the alleles:
R – red flower
Y – yellow flower
What type of inheritance?
Incomplete dominance

4. ? ? ? WW BB BW W – white flower B – blue flower Codominance
When white flowers are crossed with blue flowers,
the offspring produced have white and blue flowers.
white flower X blue flower white & blue flower WW ? BB ? BW ?
Genotypes?
What are the alleles:
W – white flower
B – blue flower
What type of inheritance?
Codominance

5. red x blue purple ? ? ? RR BB BR What are the genotypes?
What are the alleles?
R – red
B – blue
What type of inheritance?
Incomplete dominance

6. long x short medium ? ? ? LL SS LS What are the genotypes?
What are the alleles?
L – long
S – short
What type of inheritance?
Incomplete dominance

7. black x white gray ? ? ? BB WW BW What are the genotypes?
What are the alleles?
B – black
W – white
What type of inheritance?
Incomplete dominance

8. ? ? ? curly hair x straight hair wavy hair CC SS CS
What are the genotypes?
What are the alleles?
C – curly hair
S – straight hair
What type of inheritance?
Incomplete dominance

9. In shorthorn cattle, when red cattle mate with a white cattle, the offspring are red with white patches. Cattle that are heterozygous, that is, red with white patches are called Roan cattle.
Roan cow.

10. A roan bull is crossed with a white cow.
In shorthorn cattle, when red cattle mate with a white cattle, the offspring are red with white spots. Cattle that are heterozygous, that is, red with white spots are called Roan cattle.
Type of Inheritance? ________________
Codominance
A roan bull is crossed with a white cow.
Trait _______________
Coat color
Red coat - R
White coat - W
Alleles? _______________ & _______________ RW WW
Genotype of parents? ________ x ________
50% RW
50 % WW
% Genotype of offspring? __________________
50% Roan coat
% Phenotype of offspring? _________________
__________________
50% white coat

11. In a certain species of pine trees, short needles are dominant to long needles. A pine tree heterozygous for short needles is crossed with a pine tree with long needles.
Length of pine needles
Trait ______________________
short needles - S
long needles - s
Alleles? _______________ & _______________ Ss ss
Genotype of parents? ______ x _____
50% Ss
% Genotype of offspring? __________________
50% ss
50% short needles
% Phenotype of offspring? _________________
__________________
50% long needles

12. Type of Inheritance? ______________________
Andalusian chickens are a rare breed of chicken that have grey feathers. These grey Andalusian chickens are produced when a black chicken is crossed with a white chicken.
(Black + white = grey)
Incomplete dominance
Type of Inheritance? ______________________

13. An Andalusian chicken is crossed with another Andalusian chicken .
Andalusian chickens are a rare breed of chicken that have grey feathers. These grey Andalusian chickens are produced when a black chicken is crossed with a white chicken.
An Andalusian chicken is crossed with
another Andalusian chicken .
Trait _______________
feather color
Alleles? _______________ & _________________
Black feather - B
White feathers - W
Genotype of parents? ________ x ________ BW BW
25% BB;
50% BW;
25% WW
% Genotype of offspring?_______________________
25% black feathers;
% Phenotype of offspring?______________________
___________________________________________
50% Andalusian/grey feathers;
25% white feathers

14. IA IB ii Long lost son: ____ Mr. Howell
Mr. Howell died and left all his money to his two children. A young man claiming to be a lost third child sued for his share of the estate. The judge ordered blood tests for all family members and for the young man. Mr. Howell had AB blood type. His wife had type A, and the young man who claimed to be the long lost son had type O blood. Can the long lost child be Mr. Howell’s son? ii
Long lost son: ____ IA IB
Mr. Howell
Can the long lost child be Mr. Howell’s son?
Mr Howell has no recessive i allele therefore it is not possible for him to be the father.