In this lab, we simulated different types of crosses by flipping coins. Coins serve as a good model for determining what alleles get passed on. Each side is one allele, and each side has an equal chance of being chosen. In the lab, we used coins to simulate crosses. First we tried to predict the the sex of an offspring. We labeled the side of one coin with "x" and the other with "y." The other coin had "x" on both sides. We flipped each coin 10 times. The results were 6 boys and 4 girls. The next cross we did was testing whether a child would inherit Bipolar disease. Bipolar disease is inherited through autosomal inheritance. Autosomal inheritance is where the gene is on one of the 22 chromosomes that do not determine sex. On one side of a coin, I labeled "x," and on the other side, "y." The other coin was labeled "x" on both sides. I flipped each coin 10 times. The result was 5 children with bipolar disease and 5 children without it.
Next, we looked at colorblindness. Colorblindness is inherited through X-linked inheritance. It is a recessive trait. The "mother" was a carrier and the "father" had normal color vision. One coin was labelled XB and y, and the other was labeled XB Xb. When we flipped the coins, we got 2 boys with normal vision, 4 with colorblindness, and 4 girls with regular vision. The last cross was a Dihybrid cross. A dihybrid cross is where two traits are passed on at the same time. The rest of our crosses were monohybrid crosses. I expected a 9:3:3 ratio. 10 would be homozygous and 6 would be heterozygous. Our results were a 7:4:3:2 ratio. This could have happened because this was only a guess. Probability can only take you so far. It does not tell you exactly what will happen. It is only a guess.
I can attribute the results that I got in these labs due to meiosis and recombination. These two processes create genetic diversity. Since alleles separate independently of each other, many different combinations can be made.
This relates to events in my life. When my aunt and uncle wanted to have children, they did a genetic test to make sure that their child would not be prone to any genetic diseases. They knew that because of genetic inheritance, their baby could have genetic diseases. There was a history of genetic disease in their family. Once the results of the genetic test came, they saw that they were not carriers of the disease. because of this, they have healthy children.
Next, we looked at colorblindness. Colorblindness is inherited through X-linked inheritance. It is a recessive trait. The "mother" was a carrier and the "father" had normal color vision. One coin was labelled XB and y, and the other was labeled XB Xb. When we flipped the coins, we got 2 boys with normal vision, 4 with colorblindness, and 4 girls with regular vision. The last cross was a Dihybrid cross. A dihybrid cross is where two traits are passed on at the same time. The rest of our crosses were monohybrid crosses. I expected a 9:3:3 ratio. 10 would be homozygous and 6 would be heterozygous. Our results were a 7:4:3:2 ratio. This could have happened because this was only a guess. Probability can only take you so far. It does not tell you exactly what will happen. It is only a guess.
I can attribute the results that I got in these labs due to meiosis and recombination. These two processes create genetic diversity. Since alleles separate independently of each other, many different combinations can be made.
This relates to events in my life. When my aunt and uncle wanted to have children, they did a genetic test to make sure that their child would not be prone to any genetic diseases. They knew that because of genetic inheritance, their baby could have genetic diseases. There was a history of genetic disease in their family. Once the results of the genetic test came, they saw that they were not carriers of the disease. because of this, they have healthy children.
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