The first thing we did when we came into class was go over our homework. The problem we went over the most was question 3. That was about Spongebob and Spongesusie and if they had a kid what would it be. Square is the dominant allele for Spongebob which means it will over power the other genotypes. The genotypes for Spongebob were Rr and SpongeSusie was rr. If they had kids they would have two round kids and two square kids. The second part was about chances of getting round or square kids. The chance for a square kid is 50% and the chance for a round kid is 50%. Then we talked about the tongue curling. Johnny couldn't curl his tongue and same with his parents, but his brother and sister could. There are a few explanations for this maybe that Johnny's parents could do it they just do not know how to control their muscles. Also, maybe a gene cancelled that gene out. For this to happen is very unlikely. Jake could do it and so could his mom, but his dad and two other brothers could not. The moms genotype could have been Cc and the dad's genotype could have been cc. Jake's genotyoe is Cc and his two other brothers are cc. C means you can roll your tongue and c means you can not. Some people didn't understand this but they could just have just drawn a punnet sqaure like the one above. That will help their understanding of finding kids genes and where they come from.

SF Period 7 Blog 4