Genetics Assignment You will be setting up several fly crosses, comparing offspring ratios, and determining the mode of inheritance of those genes. We will be using mutants in the white gene and in the miniature gene for this lab. The white gene and the miniature gene are both located on the X chromosome. Answer all […]
Using the table of critical values shown, what is the P-value range we would obtain for our test?
Assignment When two heterozygotes are mated, the ratios of the offspring produced should be in a 1:2:1 ratio if normal Mendelian segregation is occurring. If one of the alleles is dominant, then the phenotypes observed should be present in a 3:1 ratio with the dominant phenotype more common than the recessive one. We can use […]
Identify the metabolites expected to change drastically in the mutant and indicate whether you expect the concentration to increase or decrease.
ASSIGNMENT Representative abundances of selected metabolites found in a small molecule extract (SME) from your designated wild-type bacterial strain are shown in the table below. Note: These reported abundances are dependent on the solubility and ionization characteristics of each compound within this complex mixture. They, therefore, have no direct connection with the metabolite concentrations in […]
Are there any other possible genotypes your parent flies could be? Do you get different results from the two different reciprocal matings when the trait is sex-linked?
Drosophila Lab—Patterns of Heredity Objective: Learn and apply the principles of Mendelian inheritance by experimentation with the fruit fly Drosophila melanogaster. Make hypotheses for 2 Experiments: 1. Monohybrid crosses, 2. Sex– linked crosses, and test hypotheses by selecting fruit flies with different mutations, mating them, recording observations, and analyzing the phenotypic ratios of the offspring. […]
Make a scatter plot of p and q over 30 generations. What phenotype is being favored? What benefits does that phenotype have over the alternative possible phenotypes?
ASSIGNMENT Q5.4.2 What model of selection is going on in this scenario? How do you know? (i.e. How do the relative fitness values compare to one another)? Q5.4.3 What phenotype is being favored? What benefits does that phenotype have over the alternative possible phenotypes? Q5.4.4 Will this population go to fixation? If so, which allele […]
How would the phenotypic frequencies look if the genes were not linked? Which two numbered phenotypes in Table 1, represent offspring of the parental types?
Activity 4 BIO340 Activity #4: 3–Point Cross, Gene Order and Mapping I. Determining single–crossovers (SCOs), double–crossovers (DCOs) and gene order.(Initially, you do not know what the order of the genes is on the chromosome. Your DCOs will be compared to your parental types to determine which gene is in the middle.)We want to map the […]