(Solved): ACTIVITY 2: PREDICTING F1 AND F2 PHENOTYPES [8 POINTS] You and your partner will be assigned a cross ...

ACTIVITY 2: PREDICTING F1 AND F2 PHENOTYPES [8 POINTS] You and your partner will be assigned a cross of two (2) of the strains you studied in Activity A. The flies from that cross are considered the parental strains for this activity. Indicate the parental strain cross you are assigned below. Possible Parental Strain Crosses: #1 Mutant D [Female] x Wild Type [Male] #2 Mutant C [Female] x Mutant A [Male] #3 Mutant B [Female] x Wild Type [Male] You must consider which strain provides the males / females since any one of the mutations could be sex linked. The strains noted above are the parents of the

generation. The resulting

generation have already been crossed again. For Drosophila Part II, you will be analyzing and counting the

progeny (

generation) that descended from your assigned P cross and comparing your results to your predictions based on Punnett Squares. Work two (2) Punnett Squares to show the Parental (P) and

cross results. (Hint: You may assume the

strains are homozygous for their particular trait, i.e., you may assume the

strains are true breeding). Assign the allelic symbols and genotype. [6] Make a prediction about the

generation flies with respect to the expected ratios based on the

cross. (For example: Mutant

is homozygous recessive and therefore the ratios in the

generation should be

dominant to recessive). What do you believe is the mode of inheritance? [Dominant, Recessive, Autosomal, Sex Linked, etc.] Can you tell at this point in the experimenT?