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You are studying ear length in rabbits. There are two phenotypes, long and short ears, which are controlled by the E and e alleles, respectively. Long ears are dominant over short ears. You hypothesize that the trait is following simple Mendelian inheritance. To test this, you cross a true-breeding long eared rabbit with a true-breeding short eared rabbit to produce the F1 heterozygotes. You then cross the F1 offspring to produce the F2 rabbits. Examining 200 rabbits, you note that 130 rabbits have long ears and 70 have short ears. Does the data support your hypothesis? Support your answer with a chi-squared analysis.
In a separate experiment CC dd individuals were crossed to cc DD individuals. The F1 generation was then testcrossed to cc dd individuals. What would be the result of this testcross.
If two parents are heterozygous carriers of Cystic Fibrosis, demonstrate a pedigree with four children showing the incidence of carriers and afflicted children.
You treat a partially purified preparation of protein with a reagent that breaks bonds between sulfur atoms. Which level(s) of protein structure are likely to be affected the most and WHY?
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Describe Miller and Urey's experiment.
Two and a half miles below ocean surface in areas where the Earth’s tectonic plates are moving apart are hydrothermal vents.
Biotechnology allows us to employ living organisms or their processes for human needs or purposes. Research how biotechnology is used today. Discuss one use of biotechnology, answering the following questions:
If you wanted to measure the absorbance of hemoglobin, the red pigment of your red blood cell, what wavelength would be best? Explain why.
Assume you treated butter with a fatty acid desaturase, an enzyme that removes hydrogen from fatty acids and creates double bonds.
What do you think is the most probable mechanism of browning? If a patient's resting cardiac output is 5.6 l/min and on a stress test she elevated her heart rate to the highest of 176 beats/min with a stroke volume of 115 ml/beat, what is her cardiac..
Describe the importance of adding NaOH at the end.
The panspermia hypothesis proposes that life did not originate on Earth, but instead arose else where in the galaxy.
Suppose that a light-sensitive cell in the eye of a particular invertebrate. The cell membrane contains cGMP-gated K+ channels.
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