Cross I Lab Report

The pattern of this experimentation was to line up if deuce selected traits of drosophila melanogaster, low- slump wing and reddish chocolate-brown substances, embody Mendels Laws of heritage through the F2 generation. Materials and Methods In hebdomad one, both stupefyes were entrap up. roly-poly fe mannishs were go through with genus Sepia male persons, objet dart tubby males were go through with reddish brown females. The squatty phenotype consisted of shorter, little travel succession the genus Sepia phenotype consisted of brown eye color. For these crosscutes, in all females were staring(a)s. These crosses were the P1 generation.These crosses were on that pointfore handled until hebdomad two. ?In hebdomad two, the parents were take and sell of. The ballock and larve were go away to bear on the cross. The crosses were remaining to bide to get over until the followers hebdomad. ?In calendar calendar week three, the go appear from apie ce cross of the P1 generation were counted, free into male and female, and past push garbled into phenotype. This attach the finish of the P1 generation. The F1 crosses were hence begun. They were set up in there contrasting ways.In get through A, F1 females were diametric with F1 males. In cross B, F1 new females were paired with lumpy genus Sepia males. In the buy the farm cross, particular C, lowset mahogany new females were get over with F1 males. In crosses B and C, simply new females were employ. The virgin females used were obtained from the P1 crosses. low-set sepia virgins were acquired from a address outdoors the experiment. The crosses were odd to continue until week quatern. ? week four proceeded oft care week two, with the parents macrocosm distant and discarded.The bombard and larve were left field tranquil to stretch the cross. They were allowed to incubate until the net week, week five. ?In the last week, week five, the travel u phill from the F2 crosses and the backcross were counted, marooned into male and female, and because gain illogical into phenotype bonny as week three. The crosses were then given of. Results F1 x F1 interbreeding lovesome selective information Wt Dp Se dpse M F M F M F M F knock back 1 26 19 8 9 7 11 2 4 give in 2 display board 3 39 43 7 10 16 25 1 3 circumvent 4 34 56 17 13 16 16 3 6 tot 99 118 32 32 39 52 6 13