3.03 Harvard Case

2. Indicate on your pedigree chart the individuals who are carriers by shading half of each circle or square.

Out of a total from 26 sequences only 6 were made up of 4‘s while 20 were composed of different structures of 2‘s. This tells us that 77% of the asci showed crossing over while 23% did not.

The following is a Haplogroup chart showing the sample, where it was collected, haplogroup, and ancient origin. Please note that the samples I collected, and that yielded a haplotype, are highlighted in yellow.

1) If the frequency of a recessive allele is 30% in a population of 100 people, how many would you predict would be carriers of this allele, but would not express the recessive phenotype?

Figure 4. This graph depicts the average allele frequency of male cichlid fish when a mutation that goes from recessive to dominant arises within the population at a rate of 0.001. The average value over five trials is shown to be 0.318.

3. a) A plant can have either tall (T) stems or short (t) stems. Two plants are crossed. One has the genotypeTt and the other has the genotype Tt. Fill in the Punnett square below for this cross. (1

6. Gather data: On the DESCRIPTION tab, click Reset. Set DD and dd to any values you like. Fill in the initial values in the table below, and then run the Gizmo for five generations. Record the allele and genotype percentages for each generation in the table below.

Once the Punnett square for Question 12 is complete, calculate the ratio of purple and yellow kernels (recall that if the dominant trait is present, it will be expressed).

Calculate the ratios of the genotypes and phenotypes of the offspring in the F1 generation.

You are also provided with a heterozygous female, and a homozygous recessive male for a genetic cross. In this particular female, all the dominant alleles are on one chromosome, and the recessive counterparts are on the other homologous chromosome. Due to a chromosomal condition, in the female no recombination occurs between the M and N loci. Normal recombination occurs between the L and M loci. Diagram this cross, and show the genotypes and frequencies of all offspring expected from this cross.

We will use Punnett Squares to find out the genotype and phenotype in the offspring of the fruit flies. Our experimental hypothesis of this experiment is that the genes of the fruit flies are linked, where the body color of the fruit fly is dark (b) recessive or light (B) dominant and type of wing, normal wings (W) dominant and abnormal wings (w) recessive is linked. The null hypothesis is that there will be an unlinked ratio for the phenotypes if the loci was

If 1000 offspring were scored for both characters, what number of offspring would be expected to have each of the four phenotypes (assuming no linkage)? List them below.

Using the Hardy-Weinberg equation, calculate the predicted genotype frequencies for each population scenario below. Place your calculations and data in the space provided below. Once you have calculated the frequencies, answer the conclusion questions for each one. Please remember that all calculations must be shown for full credit.

This can be used to support my claim using a punnett square (figure 5), just like my last piece of evidence. Because metallic is the dominant gene even though it only makes up one of the four alleles, half of the baby drakes have the metallic phenotype. Although this might look like the mother's genes are stronger you can explain with a punnett square that each baby drake receives half of its genetics from the mother and half of its genetics from the father. We have now supported my claim with three pieces of evidence, but that doesn’t make it correct. In order to be sure that my claim is correct then we would have to find evidence to support the fact that the other claims are

Suppose unattached earlobes are a dominant trait. Phil and Maggie both have unattached earlobes but their daughter, Celia, does not. If Phil and Maggie have a second child, what is the probability that it will have attached earlobes?