They also determine whether the unknown mutation is dominant or recessive, and whether it is autosomal or sex-linked. Linkage Determination with Drosophila In this lab students use the Drosophila stock Curly/Plum Dichaete/Stubble to determine which chromosome an “unknown” mutation is located upon.
Students then design and conduct an experiment to determine the effect of temperature change or chemical exposure on the contraction rate. Lumbriculus: Contraction Rate of the Dorsal Blood Vessel In this introductory physiology lab, students determine the contraction rate of the dorsal blood vessel of the blackworm Lumbriculus.And preparing one is easy-simply soak fresh or dried plant material in water. Make a Hay Infusion Hay infusions are widely used as a source of microorganisms for studying decomposition, fermentation, and disease.
What’s the Genotype? In this lab students are introduced to the testcross and its use in revealing whether an organism is homozygous or heterozygous for a trait.
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In doing so they practice basic science skills including collecting and graphing data, interpreting data, and doing serial dilutions.