Genetic Solutions For PSLO

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Category:
Biology
Subcategory:
Genetic Solutions For PSLO
Level:
Academic
Pages:
2
Words:
307
View sample
Let XB = Normal vision allele Let Xb = Red-green color blindness allele Data collection/Selection Parent genotypes: XBY * XBXb Parent 1 gametes: XB , Y Parent 2 Gametes: XB , Xb Analysis Parental Gametes XB Y XB XBXB XBY Xb XBXb XbY F1 genotypic ratio= 1 XBXB : 1 XBXb : 1 XBY : 1 XbY F1 phenotypic ratio= 1Normal vision girl: 1 red-green blindness carrier girl: 1 Normal vision boy: 1 red-green color blind boy Conclusion From the phenotypic ratio, we can conclude that there is 50% chance of the children born to these parents having red-green color blindness. Therefore, there is a half chance of a boy child having the red-green color blindness and half chance for the girl being a carrier for the red-green color blindness trait. Subject Matter The couple will father a female child who is not red-green color blind. Since normally the girl takes the X-chromosome from the father and in this case the father has normal vision. Therefore, the mother being a carrier will pass red-green color blindness from the mother. 2) Let R = Purple flower color and r = white flower color Let D = Dark Green leaves and d = light green leaves Data collection Parent Genotypes: RRDd * RrDd Parent 1 Gametes: RD, Rd Parent 2 Gametes: RD, Rd, rD, rd Parental Gametes RD Rd RD RDRD RdRD Rd RDRd RdRd rD RDrD RdrD rd RDrd Rdrd F1 genotypic ratio= 1RDRD: 2RdRD: 1RdRd: 1RDrD: 1RdrD: 1RDrd:1Rdrd F1 phenotypic ratio= 6Purple flower dark green leaves: 2purple flower and light green leaves Conclusion ¼ of the offspring will have purple flower color with light green leaves. Subject Matter The parents above will not be able to produce offspring with white flower color. This is because the gene responsible for white flower color is recessive all through....
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