The Mississippi Bippy is a hypothetical animal favored by somegeneticists. In this animal amiable (A) is dominant to nasty (a),lazy (L) is dominant to active (l), and crazy (C) is dominant tosane (c). An amiable, lazy, but sane female is crossed with anasty, active, but crazy male and all of the F1 progenyare found to be amiable, lazy, and crazy. The testcross of anF1 female with a nasty, active, and sane male gave thefollowing results:
Phenotype | # |
amiable, lazy, crazy | 56 |
amiable, lazy, sane | 413 |
amiable, active, crazy | 1 |
amiable, active, sane | 22 |
nasty, lazy, crazy | 24 |
nasty, lazy, sane | 3 |
nasty, active, crazy | 421 |
nasty, active, sane | 60 |
a) (1pt) Draw out the crosses (i.e. indicate the genotypes ofthe parents).
b) (1pt) What are the genotypes of the progeny.
c) (1pt) Construct a genetic map showing the map order and thedistances between the genes.
d) (1pt) Do the data show evidence of interference? If so, howmuch is there?
