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Jan 9, 2024

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Name and Title: Include your name, instructor's name, date, and name of lab. Ora Costine Mr Johnson 5/9/23 Heredity Lab Objective(s): In your own words, what was the purpose of this lab? The purpose of this lab was to investigate the ways that hamsters inherit long or short fur. Hypothesis: In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment. Test One: If I breed a short fur, FF female with a short fur, Ff male, then I will expect to see (all short fur; some short and some long fur; all long fur) offspring. Test Two: If I breed a short fur, Ff female with a short fur, Ff male, then I will expect to see ( all short fur; some short and some long fur; all long fur) offspring. Test Three: If I breed a long fur, ff female with a long fur, ff male, then I will expect to see (all short fur; some short and some long fur; all long fur ) offspring. Procedure: The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable) and the outcome variable (dependent variable) for this investigation. Remember, the test variable is what is changing in this investigation. The outcome variable is what you are measuring in this investigation. Test variable (independent variable): Length of the fur Outcome variable (dependent variable): The ratio of the phenotypes Data: Record the data from each trial in the data chart below. Be sure to fill in the chart completely. Test One
Parent 1: FF Parent 2: Ff FF FF Ff Ff Phenotype ratio: _2______ : ____2___ short fur : long fur Test Two Parent 1: Ff Parent 2: Ff FF Ff Ff ff Phenotype ratio: _____3___ : ___1_____ short fur : long fur Test Three Parent 1: ff Parent 2: ff ff ff ff ff Phenotype ratio: ___0_____ : ___4_____ short fur : long fur
Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences. 1. Which genotype(s) and phenotype for fur length are dominant? Short fur is a dominant trait. 2. Which genotype(s) and phenotype for fur length are recessive? Long fur is a recessive trait. 3. If you have a hamster with short fur, what possible genotypes could the hamster have? The hamster could have Ff or FF genotypes. 4. If you have a hamster with long fur, what possible genotypes could the hamster have? The genotype a hamster with long fur would have is ff. 5. Did your data support your hypotheses? Use evidence to support your answer for each test. • Test One: Yes, my data supports my hypothesis. I said there would be some short and some long and there was. • Test Two: No, my data does not support my hypothesis. I said there would be all short fur and instead there was some long and some short. • Test Three: Yes, data supports my hypothesis. There were all hamsters with long fur. 6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents. The parents of the mystery hamster were Ff. The simulation explains that the hamsters could create offspring that have long fur or short fur, and the mystery hamster had long fur.
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