Category / Science 10
Mendelian traits
Blood type is determined genetically.
The antigen molecules on the surface of our red blood cells are made up of two different enzymes.
The enzymes are encoded by different alleles of the same gene. Everyone inherits two alleles of the same gene (one from each parent) and the specific combination decides our blood type.
It is Mendelian trait because we inherit the two alleles when determining blood type.
A and B alleles are both dominant. If you were to recieve the A blood type allele from one parent and the B blood type allele from the other in your genotype, both blood types wouls be expressed in your phenotype. The O blood type allele is recessive.
DNA Isolation
Bubble Gum Lab Conclusion
In conclusion, the first hypothesis we made was correct, but the second hypothesis was not.
To solve the problem, “Which piece of gum blows the biggest bubble?” our hypothesis was, “If the Hubba Bubba is stickier, then it will blow a bigger bubble, because it will stretch more.” After testing each brand three times, our data stated that the average size for brand A (Hubba Bubba) was 11.3 cm, and the average for brand B (Big League Chew) was 8.6 cm. There were multiple influencing factors which could have affected our results, such as who had the best bubble-blowing skills, but during this experiment, like we predicted, brand A (Hubba Bubba) blew the biggest bubble, therefore, our hypothesis is supported.
Our hypothesis for the problem, “How does gum stretch-ability relate to bubble size?” was, “If the Hubba Bubba blew bigger bubbles, then it will stretch further, because it has more capacity to expand.” During our experiment we observed that brand A (Hubba Bubba) stretched 33cm, and brand B (Big League Chew) stretched 236 cm. In the end, the Big League Chew stretched much further than the Hubba Bubba, which would mean that the bubble size has no relation to stretchability like we predicted. Our hypothesis should be refuted.
