Question

(blue and red of the wild type pathways shown 5.(9.5 points) Hagrid has introduced a new course at Hogwarts: Genetics of a Through their experiments, the fifth years have discovered that flobberw in years have discovered that flobberworms are normally purple, with pigmentation controlled by mixing the end products (blue and red of the wild type below). Through genetic experiments, they've discovered that the step su genetic experiments, they've discovered that the steps of the pathways are controlled by 3 unlinked genes, R, B, and G, where recessive mutations (r, b, 8) resu the step and accumulation of the precursor. Note that mixing blue and red products gives a purple colour, whereas mixing blue and yellow gives a green colour. R colourless ----> blue B G colourless ---- yellow ------ --- > red Hagrid has intererossed parental pairs of pure-breeding flobberworms mutant at one gene, and the F2 progeny are found in ratios shown below. Unfortunately. Hagrid cannot find his notes and has forgotten what parents gave rise to each cross. Based on the pathway above, write the genotype and phenotype (colour) of the parental pairs of pure- breeding flobberworms mutant at one gene crossed to generate the Fl in the blanks below. a) (3 points) F2 = 9 purple : 3 red: 3 blue : 1 colourless parental pairs of pure-breeding worms crossed to generate the F1 are: genotype phenotype parent 1: RBG usb parent 2: b) (3 points) F2 = 9 purple : 3 red : 3 green : 1 yellow parental pairs of pure-breeding worms crossed to generate the Fl are: genotype phenotype parent 1: parent 2: c) (3 points) F2 = 9 purple : 3 green: 4 blue parental pairs of pure-breeding worms crossed to generate the F1 are: genotype phenotype parent 1: parent 2: ots) what term best describes the genetic interaction that results in the F2 ratio in c)? d) (0.5 points) what term best describes the genetic internet

Answer 1

a) GENOTYPE PHENOTYPE PARENT 1 - Rr Blue    PARENT 2 - Gg Red After the fertilisation of parent 1 and parent 2 we will get F1 progeny of Genotype (RrGg) and Phenotype (purple). Now the self fertilisation of F1 progeny will give 16 F2 progeny shown below   PARENT 1 PARENT 2 RrGg x RrGg GAMETES - RG Rg rG rg RG Rg rG rg   After Fertilisation we will get F2 progeny below
rg RrGg (P) Rrgg (B) I nGg IR RYGg ARGI I Rg I NG |RG|RR GG | RR Gg Rr GG Rg RR Gg RR g g TEGROGG RrGg N8GG Pjo (R) Trg RVGg Rugg ชชกๆ (P) 1(B) (R) IP) regg 9 Purple : 3 Blue Pay Purple B7 Blue. C y colourless R> Red Bred:' I colourless R→ Dominant. &- Recessive. Express the colour G+ Dominant - Recessive. Express the colour.