Question

1. Han Solo and Leia fall madly in love and have one child (Ben). What is the chance that they will have a child who is strong with the force? Leia is a heterozygote of the force (her father was FF and her mother was ff) and the force is a dominant trait. Han Solo does not have the force.
2. Jar Jar Binks and Jan Jan Bunks have an awkward one night stand. Jar Jar has webbed feet and is worried that his children will also have webbed feet (webbed feet is recessive). Webbed feet does not run in Jan Jan Bunks’ family. Jan Jan Bunks is homozygous dominant. What is the probability that his children will have webbed feet?


3. Maz and Plo Koon both have orange skin (it is a DOMINANT trait). They have 2 children and both of them have grey skin. Plo Koon is nervous that Maz cheated on him. Is it genetically possible that their children would have grey skin? What percent of the kids could be orange and what percent could be grey? *

4. Hairy fur is a dominant trait in wookiees. Chewbacca (Hh) and Spitmacca (Hh) fall in love and have children. What are the phenotypes and genotypes of their children? *


5. Brown (R) and Black (L) hair is a codominant trait in wookiees. If a Brown haired wookiee marries a Brown and Black haired wookiee what are the phenotypes and genotypes of their offspring?What are the genotypes of the parents? *


6. In breeding Tauntauns, Black (B) and White (W) hair are incompletely dominant to each other. If you breed a purebred Black (BB) tauntaun with a purebred white (WW) tauntaun what are the genotypes and phenotypes of the offspring? *


7. Kylo Ren is breeding tauntauns and he really wants a black one to go with his outfit. But he only has a stud GREY tauntaun. What color tauntaun should he breed it with to get the most black offspring? BL x ?? = BB *


8. Darth Vader is bald. Male pattern baldness is a SEX-LINKED trait, which means the allele is ONLY carried on the X- chromosome. Darth Vader wonders if his male children will also be bald. Complete a Punnett square to find out what percentage of his SONS will be bald if the mother of his children is homozygous for not being bald. *

Answer 1

1.
 Han Solo genotype: ff
Offspring genotypes: Ff, ff
There is a 50% chance the child will have the force.

2.
 Let f be webbed feet and F be non-webbed feet
Parental genotypes: ff ; FF
Possibility of webbed feet in offspring: 0%

3.
Yes, it is possible if both parents are heterozygous. 25% of offspring will be grey.

4.
Pheonotypes: Hairy and non-hairy fur
genotypes: HH, Hh, hh

5.
Parental genotypes: RR and RL
Offspring phenotypes: Brown hair and Brown and Black hair
Offspring genotypes: RR, RL

6.
Genotypes: BW
Phenotypes: Grey

7.
Black

8.
None of his children will be bald.<span />