Unit 4 Reflection

Unit 4 Reflection

In Unit 4, we talked about why is sex so great, the reproduction and importance of chromosomes, the world of Genetics, and how they are passed on generation to generation, which also includes Punnett squares predicting that possibility. The theme of Unit 4 was Genetics and the essential understanding was eventually knowing why sex is great? This unit was very simple in the beginning when we were learning the Cell Cycle, Asexual and Sexual Reproductions, and MItosis and Meiosis. However, towards the end when we started learning the Genetic Complications which included Punnett Squares, and the different Genetic Crosses, it started to be hard to directly understand these concepts, making me having to spend more time on them. My strengths and successes in this Unit was being able to be familiar and understand all the concepts up to  learning the Genetic Crosses and Punnett squares, and being able to do well on my Genetic Infographic because I planned which info. are related together so they eventually answer why sex is so great? However, my weaknesses and my setbacks is understanding the Genetic Crosses and Punnett squares, including the Dihybrid cross which includes crosses with double homozygous or heterozygous alleles, and doing the last few experiments of the Coin Sex Lab which include doing a dihybrid cross. This shows I need to focus a little more on dihybrid cross which I did with several problems involving a dihybrid crosses and the other genetic crosses as well, my weakness. I learned if I had a weakness, then I would just do more problems on that weakness to make it into a strength, but also keep on working strengths. In the Infographic, I learned to organize the details and concepts to form the big picture: Why is Sex is so great? I am a better student to today by doing more problems on genetic crosses and I wonder the difficulty of the units after this leading up to the Semester final, and whether if I will do well on the final?

I am a mild auditory learner with a 7, read- write learner of 5, Kinesthetic and Visual learner of 2. This made me very surprised of myself because I actually focus more and have a better efficiency without any sound. I am more of a read-write learner where I look the text when reading and notes I take in studying for quizzes and test. In order to use auditory as my strength, I will listen to videos teaching the concepts needed for the test and then use the textbook to give me more details as well.

Coin Sex Lab Relate and Review

Coin Sex Lab

In the Coin Sex Lab, we identified the Genotypes and Phenotypes used to determine the different types of genetic cross in a Punnett Square, and then determine their Phenotypic and Genotypic ratio, using coins. The coins served as the different alleles as X and Y chromosomes used in the experiment in order to determine the possible genotypes for each trial to determine the genotypic ratio for the whole experiment. For example, if we were to determine whether the person was color blind, we put XB on one side of the coin and the Xb was on the other side of coin, and the other coin with XB and Y in both sides. The coins also helped us learn the law of gene segregation, by different gene pairs  (coins) having their own traits but when gametes or disorders form, then they seperate during meiosis or the genetic cross between the coins genotypes, forming new recombinations in the Punnett Square because the crosses.

For the dihybrid cross experiment, when I flipped the coins to see who was double homozogous child from two heterozygotes. I found out that 11 of the 16 children were but actually  when doing the cross it gives 12 children that are double homozogous. This shows that the predictability is actually 11 children out of 16 children but the probability is 12 out of 16 children. Since predictability doesn't give the accurate answer but probability does, it is for sure 12 children are double homozogous.

The limit of using probability offspring's traits is sometimes not knowing the genotypes of one of the parents have. When genotypic information is given for both parents,  Monohybrid and dihybrid crosses are used. For example, if it is a cross between the father that is color blind, because of X-linked inheritance and a mother that is not color blind, then we can use the Monohybrid Cross to predict whether the child is color-blind or not. However if it is a cross between a dad that has brown eyes and color blind, and a mom that has blue eyes and not color blind. then we would have to use a dihybrid cross to find out what color eyes the child has and whether he or she is color blind or not. So now that only one parent has genotypes, we need to use test cross to find the possibility of the offspring. For instance, the dad has hemophilia (XhY) but mom is unknown. Then, we do the test cross and get unknown mom also has hemophilia (XhXh). Then we can find possibility of whether the child will get hemophilia.

Understanding the importance and usage of the monohybrid and dihybrid crosses in different scenarios relate to my life when my genes are passed from generation to generation because of the chromosomes in the human body, which composes of 2 sex chromosomes X and Y, and the autosomes(44 Chromosomes). Some of these chromosomes can contain dominant or recessive alleles that have autosomal or Sex-linked inheritance. For example, disorder for Autosomal Dominance is Bipolar's disease,an Autosomal Recessive disorder like Albinism; Sex-linked dominant disorder like Coffin Lowry Syndrome and Sex-linked recessive disorder like Color blindness. These disorders, by doing any type of genetic cross, can predict the probability of having the disorders. With this knowledge, you can be more mentally prepared by already knowing which doctor the baby would go to for that disorder that the child genetically had from his or her parents. Or if it is not a syndrome on illness, it can be a bad syndrome on eyesight such as color-blindness. If you did not inherit it but your grandparents did, it is possible the child could have it, which will prepare you to give objects with the same color, so the baby does not get confused because the confusion could led to danger like not noticing difference between a real gun and black pen, and then killing his or her life. That eventually will not be good.

Genetic Inforgraphic: Why is Sex so great?

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