#1. (3 points) The process of replication in most cellular organisms involves:
a) synthesis of a RNA product from a DNA template
b) synthesis of a protein product from a RNA template
c) synthesis of a DNA product from a DNA template
d) synthesis of a DNA product from a RNA template
#6. (3 points) You are a geneticist studying feather color in pigeons. You cross a true-breeding white pigeon to a true-breeding black pigeon. All of the F1 offspring have black feathers. You then mate F1 males to F1 females. The F2 offspring have the following phenotypic ratio 9 black : 7 white.
What genetic phenomenon is the most likely cause of this result?
c) incomplete dominance
d) incomplete codominance
#16. In goldfish, black scales (G) are dominant to gold scales (g). A separate, independent gene controls eye shape where bubble eyes (N) are dominant to normal eyes (n). You cross a true-breeding black, normal eyed male fish with a true-breeding gold, bubble eyed female fish to create F1 offspring.
Part A. (3 points) What is the phenotype of the F1 offspring?
Part B. (4 points) If you intercross the F1 offspring to create F2 offspring, what is the probability of finding a gold, normal eyed fish in the F2 offspring?
Part C. (4 points) If you genotype 100 F2 fish, how many do you expect to have the genotype GgNn?
#20. You are studying a species of sea cucumbers and analyzing seven unlinked genes, each having two alleles that demonstrate simple dominant/recessive relationships, with no epistasis. You set up the following cross:
AaBbCcddEeFFGG X aabbccDdeeFfGG
Part A. (4 points) How many of the seven phenotypes are shared by the two cucumbers in the above cross?
Part B. (5 points) What is the probability of an F1 progeny of the following genotype?: