Question

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1. In tomatoes the allele for Red fruit (R) is dominant to the allele for yellow fruit (r), and the allele for hairy plants (H) shows incomplete dominance for the allele hairless plants(L). What results would you expected from the following cross? (3 pts.) yellow/weakly hairy X Red/weakly hairy rr/HL Rr/HL LR Ir phenotypes HR HrLR Hrar Ar HR Letr Hairy / Red Bald/ yellow HrHrHR IHrHr ur LrHR Lrtr Irur LELK ILITAT

Answer 1

Here, 'R' is the dominant allele responsible for Red fourt and lg? is the recessive allele responsible for yellow fruit. Also, 'H' allele is responsible for hairy plants and 'L' allele is responsible for hairless plants. 'H' and El allele are incomplete dominant to each other, Given parents: - yellow/coeakly harry and Red/Weakly hany Their cross- Parents: . WHL X R&HL gamdeo: RH RD) CH D offsprings: 1 RH 1 RL I rH qol OH RoHH | Roth / SoHH/NHL H oH | ***** pour tout NL ROHL ROLL WHL OLL

So, follaoing phenotypes are obtained with ratio : Red/Hairy (R& HH) Red / eweakly hairy (Ro HL) ~ 7 8 = 44. Red/Hairless (Ro LL) > / 3 yellow/Hairy (20 HID I yellow/weakly harry (or HL) > 2 2 2 - 4 yellow/ Hairless →

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