Get out the data table you recorded from the Part 1 of the activity.  Tally the number of times you get for each genotype (RR, Rr, and rr) and record these numbers on the bottom of your data table.  Next, calculate the percentage of each genotype that occurred during this activity.  For instance, if you had 7 RR out of 15 trials, you will need to do division and multiply by 100 to get the percentage.
Again, record these figures on the bottom of your data table.

You should have all the percentage calculated for each genotype at this point.  Before we go any further, I would like you to think about the following questions and record your answer on the back of your data table:
1.  What is the dominant trait in your M&M activity?  Red or white?
2.  What is the recessive trait in your M&M activity?  Red or white?
3.  What are the genotypes of the parents in this activity?
4.  What are the phenotypes of the parents in this activity?
5.  Do a Punnett square based on your answer from #3.
6.  Calculate the percentage of homozygous recessive, homozygous dominant, and heterozygous genotype. 

Finally, how are these percentages similar or different from what you obtained in the M&M activity?  Write your response under the "comments" section of the post.

 


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    Ms. Pan is a 7th grade Science teacher at XXX Middle School. 

    Ms. Pan is both a scientist and an educator, but she likes the role of a teacher more than anything else. 

    The purpose of this blog is to provide online learning discussion and stimulate thinking prior classroom activities.
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    For students, please check this blog on a daily basis to participate in discussion.
    For parents, please check this blog on a regular basis to see what your children are learning in the classroom.

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