Ptc Tasting

Topics: Genetics, Allele, Genotype Pages: 4 (1079 words) Published: July 31, 2012

The hypothesis is that we will gain a 3:1 ratio, where the tasters show to have the dominant allele. We do not expect to see a difference between the observed and the expected data; therefore stating our hypothesis was supported, meaning the most dominant and outstanding allele is the one that allows people to the phenylthiocarbmide (PTC). Our hypothesis was supported. INTRODUCTION;

The ability to taste phenylthiocarbamide has shown to be one of the most known Mendelian traits based on the human body (Wooding, 2006) and its use of alleles within genes to do so. Different varieties of the same gene are termed as alleles, (Brooker, 2012). Mendel’s law of segregation articulates that; “the two copies of a gene segregate (or separate) from each other during transmission from parent to offspring,” (Mendel) this means that just one copy of either mother or fathers’ gene is present in the gamete, (Brooker, 2012), these single choice genes are the alleles. During fertilization, the diverse combinations of two gametes can theorletically equate to many allelic combinations, (Brooker, 2012). Genetic alleles, like the ones which allow you to taste the PTC or not, are based on two factors they are; genotype and phenotype which are displayed both physically and genetically. The genotype is based of the genetic composition of a singular organism (Knox, Ladiges, Evans, & Saint, 2010), physical appearances in an organism that are determined by genetic inheritance (Knox et al., 2010). Our expected hypothesis is that the, ‘tasters,’ will prove to have the dominant allele as, the trait will show to have the larger figure in the ratio of 3:1. We do not expect to see a difference between the observed and the expected, leading us to accept the hypothesis. MATERIALS AND METHODS;

The materials we were given comprised of the explanation of a Chi Square and how to go...
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