Through this lab, what we are trying to figure out is the evolution of sexual reproductions. Even though, it is commonly known that the cross-over happens during meiosis, which causes the genetic variations through the exchange of DNA sequences, we do not know much about the factors that vary these reproductions. In “Evolution Canyon”, the organism called “Sordaria fimicola” has been studied by scientists due to their difference in cross-over frequencies. There are two types of slope in “Evolution Canyon.”: the South Facing Slope(SFS) which receives higher solar radiation, causing high temperature and draught, and the North Facing Slope(NFS) where the temperature is cool, and humid. Scientists found out that strain from SFS have higher mutation rates than that of NFS. However, we do not know yet if the environmental pressures caused the difference in these cross-over frequencies and we are trying to figure it out through this lab. …show more content…
First, 4:4 can occur when recombination doesn’t happen. Secondly, 2:2:2:2 can happen when all of the pairs of chromosomes are ordered in line and then recombine. Lastly, 2:4:2 recombination occurs due to independent assortment. So both 2:2:2:2 type and 2:4:2 types occur through recombination. The effects of radiation on DNA are cell killing and mutagenesis. Continued exposure to radiation can cause bad effects on living matter. “Radiation either ionizes or excites atoms or molecules in living cells, leading to the dissociation of molecules within an organism. The most destructive effect radiation has on living matter is ionizing radiation on DNA. Damage to DNA can cause cellular death, mutagenesis (the process by which genetic information is modified by radiation or chemicals), and genetic transformation. “ (Joseph Chao, Linda Su(date not found).The Effects of Radiation on Matter. Retrieved
Cellular respiration: C6H12O6 + 6O2 → 6CO2 + 6 H2O + 36 or 38 ATP
1. Describe the function of the following pieces of safety equipment and how each might be used: (10 points)
3. State the name and structure of the functional group for each type of biologically
The protein molecules in many foods provide the amino acid building blocks required by our own cells to produce new proteins. To determine whether a sample contains protein, a reagent called Biuret solution is used. Biuret solution contains copper ions. However, the chemical state of the copper ions in Biuret solution causes them to form a chemical complex with the peptide bonds between amino acids (when present), changing the color of the solution. Biuret solution is normally blue, but changes to pink when short peptides are present and to violet when long polypeptides are present.
Please answer these questions then place them in the drop box for this lab. Use Microsoft word if possible.
Table 1 Concentration of protein, DNA, and ratio of the two in heart, kidney and liver of bos taurus. Average standard deviation of protein concentration is also shown.
3. Experiment: Use the Gizmo to find the carrying capacity with Ample, Moderate, and Little land. List the carrying capacities below.
Hydrolysis of starch for fungal amylase Aspergillus Oryzae and bacterial amylase Bacillus Licheniformis at different temperatures.
The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react
Lab Manual Introductory Biology (Version 1.4) © 2010 eScience Labs, LLC All rights reserved www.esciencelabs.com • 888.375.5487 2 Table of Contents: Introduction: Lab 1: The Scientific Method Lab 2: Writing a Lab Report Lab 3: Data Measurement Lab 4: Introduction to the Microscope Biological Processes: Lab 5: The Chemistry of Life
“Evolution Canyon” consists of two slopes in Israel that are close in proximity, but have a huge difference in environment. This makes the slopes a good model system for exploring evolution, especially because they’re so close to one another. The South Facing Side (SFS) receives more sunlight than the North Facing Side (NFS). This extreme sun exposure causes the South slope to have drought and arid conditions whereas the North side has more temperate conditions and is shady and humid. The model, Sordaria fimicola, reproduces through the process of Meiosis and their chromosomes cross over in Prophase I (Stern). S. fimicola have different crossover frequencies between the slopes
groups. It was conducted to further the research in choice overload and paralysis of the mind.
Most CNC milling machines are computer controlled vertical mills with the ability to move the spindle vertically along the Z-axis. This extra degree of freedom permits their use in die sinking, engraving applications, and
|EMB Agar | |Distinguishes bacteria that ferment |Dark blue colonies with|E. coli and P. |
4. Energy transfers are not 100% efficient – why? Cant capture all of the energy supplied by one source