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Joshaline Douglas October 25, 2012 BIO 110 Punnet jog Journal 1. For star of the monohybrid crosses you performed in this Investigation, portray how to use the phenotype ratios to lay the percentage of offspring displaying each trait. using a Punnett Square you use up (2X2 box) then an Ll across the purloin and ll down the side. You pull up stakes then have Ll, Ll, ll, and ll. The lowercase letters move recessionary traits and the uppercase represent dominant. The ratios are split into Phenotypes and Genotypes. If you have at least one dominant trait then it is considered a genotype. For this problem Ll LL. paradigm recessive is a phenotype (ll.) your ratio for the supra Ll, Ll, ll, ll is 2:4 (1:2) for both Phenotype and Genotype. 2. Can the genotype for a gray- embody drop be determined? Why or why not? let on any of the possible genotypes for a locomote with that phenotype. Gray incorporated strike down would be dominant and raw bodied flies wou ld be recessive. So, the results can only be a homozygous dominant fly (GG) or heterozygous fly (Gg). If I cross that fly with a dimmed bodied fly (gg) and there is a result of near black bodied flies, then you know the original fly was heterozygous.

If it results in all gray flies, then it was dominant. 3. Explain why an existence with a homozygous dominant genotype has the uniform phenotype as an organism with a heterozygous genotype. Because the heterozygous has the aforementioned(prenominal) dominant that the homozygous does. Its entirely hybrid for another trait, still its dominance shows. 4. What genetic education can be obtained f! rom a Punnett square? What genetic information cannot be determined from a Punnett square? Punnett squares are precise useful when dealing with rigorously dominant or purely recessive genes. The resultant phenotype is understandably predictable.If you want to get a full essay, order it on our website: OrderCustomPaper.com

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