Can someone explain how to get the map units distance apart? Why are White rough
ID: 264349 • Letter: C
Question
Can someone explain how to get the map units distance apart? Why are White rough the recombinants? At that point in the problem, how would you be able to tell what the map of the genes is to determien what is recombinant between A and B?
I specifically only need help with part B.
13. (12 points) A plant (original) with purple flowers, straight stems, and smooth fruits was allowed to self-fertilize. From the resulting seeds, 1200 adult plants were obtained. The phenotypes of these offspring are: 534 purple flowers, straight stems and smooth fruits; 178 purple flowers, curved stems and smooth fruits; 144 white flowers, straight stems and smooth fruits; 141 purple flowers, straight stems and rough fruits; 81 white flowers, straight stems and rough fruits; 48 white flowers, curved stems and smooth fruits; 47 purple flowers, curved stems and rough fruits; 27 white flowers, curved stems and rough fruits a. Provide the most likely genetic explanation for these three traits. (3 points) *F1 ratio was 3 purple: 1 white; therefore, the original plant should be Aa (A--purple, and aa-white) (1 point). *Fl ratio was 3 smooth: 1 rough; therefore, the original plant should be Bb (B-smooth and bb- rough) (1 point). *Fl ratio was 3 straight: 1 curved; therefore, the original plant should be Cc (C-straight and cc-curved) (1 point). b. For any genes that are linked, calculate the distance between them. Show your work and Circle your answer. (7 points) *If A was independently assorted to B, the Fi distribution would be 9 purple smooth: 3 white smooth: 3 purple rough: 1 white rough; Therefore A and B are linked (1 point). "The percentage of ab/ab (red rough)-x-108/1200 0.09; therefore, x-0.3-30% (2 points) "The distance between A and B is 1-2x = 40 m.u. (2 point) *A and C are unlinked because the Fi distribution is 9 purple straight: 3 white straight: 3 urple curved: I white curved (1 point) *B and C are unlinked because the Fi distribution is 9 smooth straight: 3 rough straight: 3 smooth curved: 1 rough curved (1 point) c. What is the genotype of the original plant? Circle your answer. (2 points) AB/ab; C *The genotype of the original plant should be AB/ab; Cc (2 points) A-40muExplanation / Answer
Can someone explain how to get the map units distance apart? Why are White rough