Once we have the class DNA analysis gel band pattern results, we can then calculate the percent of each genotype in the student population. This will explain the phenotype data on tasters vs no-tasters. A single band above the position of the control ladder would be a homozygous recessive (tt), in which the phenotype is a non-taster of PTC. When there is one band below the control ladder, then it would be a homozygous dominate (TT), which is a taster of PTC. Two bands would be a heterozygous (Tt), which is also a taster of PTC. (4) Hypothesis After the BI-101-30 class population investigates their taste receptors with PCP, and records their individual results, the Hardy Weinberg equation can determine the allele frequencies in the student …show more content…
(1:p 199) Method: We began the pre-lab with each student in the student population tasting a control paper and PTC paper. The tasters will be able to taste a bitter taste (some strong, some weak), and the non-tasters will not taste any differences between the two papers. The results were recorded in three columns; Strong Taster, Weak Taster, and Non-Taster. (1: p199) Lab Materials 1 small juice glass, dish detergent, table salt, contact lens solution, ice cold rubbing alcohol, 1 micro-centrifuge tube, 1 wooden stir stick, and saliva. (1;p 326) Method I collected 1/8 c of saliva, then added the following: 2 drops of dish detergent (stirred 30 sec), 2 drops of contact lens solution (stirred 30 sec), and a small pinch of table salt (stirred 30 sec). Then, I tilted the cup approximately at a 45 degree angle and ran ¼ c of the ice cold rubbing alcohol down the side of the cup, which formed a layer on the top of the saliva-soap solution. (no mixing). Once the solution separated I then took two sticks and wrapped the DNA around them by gently spinning the sticks in the school with the DNA streaks. Final step was mailing the DNA sample to Tory Blackwell for PCR analysis. (1:p
All matter is made of particles called atoms. An atom is smallest unit of matter. A matter can be solid, liquid or gas. When a group of atoms bond together this makes a molecule. The molecule is the base of chemical compounds that is involved in chemical reactions.
A lot of lesson in this experiment, one is that people like different flavor of gum for different reasons, and two not all Gums are the same. Our possible source of error is that we could
Discussion PV92 Gel Electrophoresis Results: Through the usage of gel electrophoresis the correct allele for each sample was able to be determined. Lanes one through three in the gel,were the positive control lanes they contained the PCR cocktail and a known high-quality template for the PCR reaction. First lane contained the sample with the +/+ allele, which had two copies of the ALU repeat allele. The first lane had a band at about 941 base pairs.
As my experiment, I tested 4 students by giving two of the four students a piece of spearmint gum and two students no gum during the test. The students with the gum both averaged a 97. Georgia scoring and 97, and Chloe also scoring a 97. The students who did not have a piece of gum during the test both averaged a 94. Emma scored a 100 and Mackenzie scored an 88.
He thought that if they added some flavor additives that the rats would eat more, and in doing so the diets would be more nutritionally sound. However, Mandell and Osborne found fault with this hypothesis, and its supporting data. So, much, so that in some of their papers about it they wrote that McCollum had been careless in some of his experiments.
Understanding the food tasters expertise makes it easier for the reader to
Do people older than 60 have a better or worse ability to detect salt as opposed to someone younger than 30? The important concepts and keywords that definitely need to be mastered before examining this experiment are genetic variability, five taste buds, texture, viscosity and aroma. Genetic variability is individual genetic characteristics found in an individual that may not be found in another. For instance, some people may like sour tasting foods, while others dislike it. The five taste buds found on the tongue are sweet, salty, bitter, sour, and umami (savory). These taste buds allow people to taste a wide variety of foods with different flavors.
The third problem is the difference between the tastes
The World Wide Problems of Addiction: Genetics vs. Environmental Factors or Both Chasen L. Edge Georgia Military College PSYC 200 – Introduction to Psychology The World Wide Problems of Addiction: Genetics vs. Environmental Factors or Both Why do we need to know the exact cause of addictions? Are they genetically related? Are they environmentally related or a combination of both? The answers to the questions would certainly contribute in seeking help and controlling the addiction.
Gustatory cells on our tongues are full of taste receptors, coded for by all different genes, that bind to specific substances, and each of these three chemicals has a different receptor (1). These receptors bind to the PTC, Thiourea or Sodium Benzoate in order to activate neurons that signal to our brains that we can taste that particular chemical (1). The allele that codes for the tasting of each of these substances is dominant (T)(1). Our genes, which code for these taste receptors, were compared to the known North American genotype and allele frequencies for the same
• Group II: 6y.1m.1d. - 7y.12m.31d. • Group III: 8y.1m.1d. - 9y.12m.31d. A convenience sample was used to select the participants upon the following inclusion and exclusion
As chemicals in food can be analyzed and the physiology of humans is more or less the same, so taste can be objective. Suppose a certain chemical binds with a certain receptor would create the sensation of sweetness, it should be true for most people. Although people’s sensibility of taste differs and may taste different degrees of
In my previous experience, students are usually shy to give their answers in lecture. Therefore, this year, I use iclass to ask students to post up the type of flavor that they associate with a red jelly. Most of the students answered strawberry or watermelon, which belongs to sweet taste. And I then I select some students to briefly explain their answer. The result of this quick polling is in line with research studies which are subsequently discussed in lecture.
Joshua Miller 12/18/17 Fermentation Lab report Introduction The term fermentation refers to the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat (wikipedia). Sugars are converted to ethyl alcohol when fermentation happens. In this experiment we determined if yeast cells undergo fermentation when placed in a closed flask with no oxygen. Glucose and yeast are mixed together in a closed flask and allowed to incubate for about one hour.
APEXIFICATION Apexification is defined as a method to induce a calcified barrier in a root with an open apex or the continued apical development of an incomplete root in teeth with a necrotic pulp(AAE,2003). Apexification can be achieved is two different ways: Long-term apexification with calcium hydroxide or Short-term apexification with MTA (One visit) This technique is performed on teeth that are non vital due to traumatic injury, carious exposure and teeth with anatomical variations such as den invaginatus with immature teeth. LONG-TERM APEXIFICATION WITH CALCIUM HYDROXIDE Calcium hydroxide (CH) apexification requires multiple visits and hence patient and parent compliance is very important. CH is used for the formation of an apical