I’m working on a Biology question and need guidance to help me study.
do the lab and fill out the document attached with this question.
Part 1: Determining Your Phenotype
Data Table 1 contains a series of genotypes and phenotypes for a variety of hypothetical genetic traits. The genotype and phenotype for “Parent 1” are provided in Data Table 1. For each of the traits in Data Table 1, determine your phenotype and possible genotype(s).
Note: If you have a dominant phenotype, you may have either a recessive allele and a dominant allele, such as “Aa,” or two dominant alleles, such as “AA.” If your phenotype is recessive, your genotype is always homozygous recessive such as “aa.”
- Use the mirror to determine if you have a dimpled chin.
- Record either “Dimpled Chin” or “No Dimples” under “Phenotype & Genotype(s) from Parent 2” in the “Dimpled Chin” row.
- If you have a dimpled chin, record “Dd” and “DD” under “Phenotype & Genotype(s) from Parent 2” in the “Dimpled Chin” row to represent the 2 possible genotypes for your observed dominant phenotype.
- If you do not have a dimpled chin, record “dd” under “Phenotype & Genotype(s) from Parent 2” in the “Dimpled Chin” row to represent the 1 possible genotype for your observed recessive phenotype.
- Repeat steps 1 – 4 for the remaining 9 traits in Data Table 1.
Note: For the PTC test, place the PTC strip on your moist tongue and determine whether or not you can taste the chemical.
Part 2: Determine the “Offspring”
- Draw a Punnett square to show both the genotype and phenotype ratios possible for the “Dimpled Chin” trait.
- Draw 1-2 Punnett squares on a sheet of paper. Place alleles in the in the Punnett square(s) to fill in the offspring, as shown in the example template below. The example template shown below is for “Dimpled Chin.”Take a photo of the completed Punnett square(s) and upload the image into Punnett Square 1. Be sure to include your name and the date in the drawing.
Note: If you have a dominant phenotype then you will create two Punnett squares, if you have a recessive phenotype then you will create one Punnett square.
- Record the possible offspring genotype(s), percent of phenotype, and genotypic ratio in Data Table 1 under the “Offspring” column.
- Repeat step 6 for the remaining 9 traits in Data Table 1. Upload the images into Punnett Square 2 – 10. When the exercise is finished, you will have created 10 to 20 different Punnett squares.
Note: All Punnett squares, for all 10 traits, need to be included in your report,