Genetic Cross Challenge

Welcome to the Genetic CrossChallenge

Question 1 • Give an example of: • Incomplete dominance • Complete dominance • Codominance

Question 2 • If black fur is dominant to tan fur for guinea pigs, what are all of the possible genotypes for black fur guinea pigs?

Question 3 • In order for a recessive trait to be expressed the genotype must be what?

Question 4 • If you walk up the stairs four times and down the stairs four times in one school day, what is the probability that you will fall while walking on the stairs in one school day?

Question 5 • What are all of the possible phenotypes of the offspring of a homozygous purple flower and a homozygous white flower? Purple coloration is dominant.

Question 6 • If a red flower and a white flower were crossed. What would the phenotypes be if this specific species flower coloration was an incompletely dominant trait?

Question 7 • You have just received a new pet! You now have a brown rabbit in the family. You know, from your great biology class, that brown fur color in dominant in rabbits. You want to decipher the genotype of your new pet. What should you do? Show all possibilities.

Question 8 • What do you think the last name of the man was who helped develop a way to predict the outcome of a genetic cross?

Question 9 • If eye color were codominant in human beings, what would the offspring of a brown eyed man and a blue eyed woman look like?

Question 10 • Complete the following: • BbRr x bbRr

Question 11 • How many offspring would be tall with purple flowers if two pea plants were crossed which were heterozygous for both traits?

Question 12 • How many albino, smooth-haired guinea pigs would be produced from the cross of a homozygous dominant male for both traits and a homozygous recessive female for both traits?

Genetic Cross Challenge