Section 15-1 Inquiry Activity 1. Hypothesis: What kind of variation in length do lima beans show? Prediction: ____________________________________ Data Gathering: With your partner, count out 10 lima beans and measure the length of each to the nearest 0.5 millimeter. Record your results in a data table. Graph the number of lima beans you found at each length, and draw a best-fit curve for your data. Add another lab pair’s data to your data table, graphing the combined data on the same graph as your original data, and draw a new curve. Repeat Step b until you have drawn a curve representing the combined data of the class. Inquiry Activity

Analyzing the Data: As more and more data is added, how long are most of the beans measured? 5. Drawing Conclusions: _________________________________ _________________________________

Section 15-1

An individual who produces as much melanin as humanly possible has genotype MMLLNN. That person’s phenotype would be to have very dark skin, so brown as to almost appear black. During meiosis, the diploid (2n) genotype, MMLLNN, Is reduced to the haploid genotype. As the alleles are segregated from each other, the only possibility for the sperm or egg is MLN.

Section 15-1 The union of one genetic half-cell, the sperm, with the other genetic half-cell, the egg, results in one genetically whole cell, the zygote +

Add the alleles from the sperm (MLN) and the alleles from the egg (MLN) to determine the genotype of the zygote (and the new individual), (MMLLNN)

An individual who produces as little melanin as humanly possible has genotype mmllnn. That person’s phenotype would be to have very light skin, so as to appear so white that the pink of the blood shows through. During meiosis, the diploid (2n) genotype, mmllnn is reduced to the haploid genotype. As the alleles are segregated from each other, the only possibility for the sperm or egg is mln.

Add the alleles from the sperm (mln) and the alleles from the egg (mln) to determine the genotype of the zygote (and the new individual)

Add the alleles from the sperm (MLN) and the alleles from the egg (mln) to determine the genotype of the zygote (and the new individual)

During meiosis, the diploid (2n) genotype, MmLlNn is reduced to the haploid genotype. As the alleles segregate and assort independently, maximum diversity results.

Add the alleles from the sperm (MLN) and the alleles from the egg (MLN) to determine the genotype of the zygote (and the new individual), (MMLLNN)

The number of alleles coding for the cells to make melanin determine how genetically dark the individual’s hair, skin, or eyes will be. Count up the alleles and total them in the first square

Now, plot the data on the graph, with the numbers of alleles on the x-axis and the number of individuals on the y-axis.