Why is Sex So Great?
The coin sex lab was done to demonstrate Mendel's Laws of Segregation and Independent Assortment. We first predicted the probability of mono hybrid crosses such as gender and colorblindness. Using Punnet Squares, we predicted that we would get 12 normal vision children and 4 color blind children. We did not get such results. We got around 50% of the 16 children tested were colorblind. For the dihybrid cross we tested, we did not get the predicted results of 9:3:3:1. We got an unlikely 3:8:2:3. This shows that although we can predict the traits of the offspring due to meiosis, we don't always get predicted results. Like in the dihybrid results, we did not get the predicted results, but rather a very outrageous result. An example of the lack of reliance from predicting traits is colorblindness. We predicted that 25% of the offspring would be colorblind, but that number was nearly doubled.
This unit's essential question was 'Why is Sex so Great'. In this lab we learned about mitosis, which is the reproduction of autosomes, and meiosis, which is also cell's reproduction, but only for X-linked cells. We know that our knowledge of biology all roots from Mendel's original studies of pea plants, as he was the one who discovered such important factors such as dominance and probability. Because of his discoveries, we now have knowledge of the complexity of genes, and how there is often may factors affecting each allele, such ass multifactorial disorders, gene linkage, and polygenic traits. Not only do we know of the traits and the chromosomes, but we can predict the outcome of the offspring. We can predict them using punnet squares. Monohybrid crosses are simple punnet squares we are used to seeing with 4 outcomes, 3/4 of which are dominant, and the remaining recessive. However, in a dihybrid cross, there are 16 possible outcomes, with a ratio of 9:3:3:1. This means that there are likely to be 9 totally dominant offspring, with 3 dominant and recessive, respectively, offspring, 3 recessive and dominant offspring, and lastly 1 totally recessive offspring.
This unit was more serious than what I had ever experienced before with sexual reproduction. I had never learned about mitosis and meiosis, but I still have many questions. I would like to learn more about inheritance especially, as that is intriguing to me. I am not so much unsure as I am curious about it because there are so many possibilities in the processes and so much room for error. The human body is extremely complex, as I learn everyday in this class. I have grown in this unit most out of all we have done this year because this unit brought maturity and complex understanding. Such processes as Mitosis and Meiosis cannot be memorized, but must be learned and understood.
This unit's essential question was 'Why is Sex so Great'. In this lab we learned about mitosis, which is the reproduction of autosomes, and meiosis, which is also cell's reproduction, but only for X-linked cells. We know that our knowledge of biology all roots from Mendel's original studies of pea plants, as he was the one who discovered such important factors such as dominance and probability. Because of his discoveries, we now have knowledge of the complexity of genes, and how there is often may factors affecting each allele, such ass multifactorial disorders, gene linkage, and polygenic traits. Not only do we know of the traits and the chromosomes, but we can predict the outcome of the offspring. We can predict them using punnet squares. Monohybrid crosses are simple punnet squares we are used to seeing with 4 outcomes, 3/4 of which are dominant, and the remaining recessive. However, in a dihybrid cross, there are 16 possible outcomes, with a ratio of 9:3:3:1. This means that there are likely to be 9 totally dominant offspring, with 3 dominant and recessive, respectively, offspring, 3 recessive and dominant offspring, and lastly 1 totally recessive offspring.
This unit was more serious than what I had ever experienced before with sexual reproduction. I had never learned about mitosis and meiosis, but I still have many questions. I would like to learn more about inheritance especially, as that is intriguing to me. I am not so much unsure as I am curious about it because there are so many possibilities in the processes and so much room for error. The human body is extremely complex, as I learn everyday in this class. I have grown in this unit most out of all we have done this year because this unit brought maturity and complex understanding. Such processes as Mitosis and Meiosis cannot be memorized, but must be learned and understood.
