Lab- Dihybrid Crosses
This lab was about corn genetics- dihybrid crosses. We had to analyze the corn kernels and later on see if our hypothesis was either supported or rejected. We wanted to discover what color and coat texture was dominant (purple and wrinkled, yellow and wrinkled, purple and smooth or yellow and smooth). I had not yet done labs like these ones, but I definitely had studied about monohybrid and dihybrid, crosses. Also, I have done many activities on this aspect and other labs that were similar but not identical to this one.
To perform this lab, we had to click on the corns that were purple and smooth, yellow and smooth, purple and wrinkled or yellow and wrinkled. Then, we analyzed the data we had collected and plugged it in the Chi Square to support or reject or hypothesis. This lab was of quite simple procedure and did not require many steps.
My calculations were my Chi-Square tests, which I am posting here under the discussion box.
In this lab, I counted the kernels in corn based in color and coat texture. In the hybrid crosses the purple and smooth showed up the most (later on we can see these are the dominant alleles when we plug these values in the Chi-Square test table). If we were to do Punnett Squares (parents of hybrid crosses and two heterozygous parents) to discover the estimation of the outcomes (the percentage of chance the outcome will be a certain thing), we would see that expectations are that purple and smooth alleles will cover 9/16 of the corn and that there is 9/16 probability that the kernel will end up being purple and smooth. With the Punnett Square, we can see that purple and wrinkled alleles have 3/16 chance of occurring, just as yellow and smooth alleles. The yellow and wrinkled alleles are 1/16 probable to occur. With these numbers we can come up with the expected ratio for this cross, which is 9:3:3:1. However, the actual numbers may vary a bit from this ratio, or even vary a lot, since these probabilities are
To perform this lab, we had to click on the corns that were purple and smooth, yellow and smooth, purple and wrinkled or yellow and wrinkled. Then, we analyzed the data we had collected and plugged it in the Chi Square to support or reject or hypothesis. This lab was of quite simple procedure and did not require many steps.
My calculations were my Chi-Square tests, which I am posting here under the discussion box.
In this lab, I counted the kernels in corn based in color and coat texture. In the hybrid crosses the purple and smooth showed up the most (later on we can see these are the dominant alleles when we plug these values in the Chi-Square test table). If we were to do Punnett Squares (parents of hybrid crosses and two heterozygous parents) to discover the estimation of the outcomes (the percentage of chance the outcome will be a certain thing), we would see that expectations are that purple and smooth alleles will cover 9/16 of the corn and that there is 9/16 probability that the kernel will end up being purple and smooth. With the Punnett Square, we can see that purple and wrinkled alleles have 3/16 chance of occurring, just as yellow and smooth alleles. The yellow and wrinkled alleles are 1/16 probable to occur. With these numbers we can come up with the expected ratio for this cross, which is 9:3:3:1. However, the actual numbers may vary a bit from this ratio, or even vary a lot, since these probabilities are