Yeast Lab (1)

Yeast Lab (1) - Alpha 1 and a1are dominant and white. Alpha...

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Tony Tran Introduction: For the experiment, we crossed two Saccharomyces cervisiae haploid strains Haploid strains appears during Meiosis I creating spores The spores become either “a” or “Alpha” differentiating the mating type of the yeast cells As the haploids develop, they can begin mating with other haploids. The haploids secrete pheromones which signify mating and later becoming shmoos (two yeast haploids combining). The shmoos creates space and undergoes meiosis I which forms a diploid zygotes As the zygotes undergoes essentially mitosis cell division leading to budding which creates diploid daughter cells Budding continues, and the zygote becomes a diploid colony The colony will repeat the cycle becoming two haploid strains once again
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Unformatted text preview: Alpha 1 and a1are dominant and white. Alpha 2 and a2 are recessive and red The parent and offspring looked very lumpy with little bumps. The two dominant strains were white and the two recessive were red Our predicted phenotype ratio was 1:2: 1 and our hypothesis was to compared our prediction and the actual yield Our hypothesis was that Alpha 1 and a1 would yield a white color, Alpha 2 and a2 would yield a red color, Alpha 1 and a2 would yield a pink color, and Alpha 2 and a1 would yield a pink color. The reasoning behind our hypothesis was the genotypes for our Punnet square would yield the same results as the predicted phenotypes. 4. Raven, Peter H., George B. Johnson, Kenneth A. Mason, Jonathan B. Losos, and Susan R. Singer. Biology. 9th ed. New York, NY: McGraw-Hill, 2011. Print....
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This note was uploaded on 02/05/2012 for the course BIO 102 taught by Professor Avery during the Spring '11 term at FGCU.

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Yeast Lab (1) - Alpha 1 and a1are dominant and white. Alpha...

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