Biology Lesson – Punnett Squares
Posted: November 27, 2007
Do all 10 problems. You MUST do a Punnett Square for each problem, or no credit. For the problems where there is already a Punnett Square done for you, you must circle the box or boxes in the square that lead you to the answer.
Do only the first 4 problems (the monohybrid problems). Number these problems #11-14. Do not change the first pull down menu in the problem (for example, if it says “the bb genotype,” do not change that). Just write the answer.
There are 10 problems (some with multiple parts), but you will only do 4 of them (number these #15-18):
Monohybrid Cross – Copy the Punnett Square and the ratios of the offspring (for example, ½ of offspring can hear, ½ of offspring are deaf).
Testcross – Copy the 3 Punnett Squares and the ratios of the offspring.
Incomplete Dominance – Copy the Punnett Square and the ratios of the offspring.
Scroll down and do
Sex (It’s a Phenotype, Not a Chromosome!) – Copy the Punnett square and the ratios of the offspring.
The following problems are only for students during the regular year, NOT for summer school students: Do #1-13 from http://www.biology.arizona.edu/mendelian_genetics/problem_sets/monohybrid_cross/monohybrid_cross.html - copy the question (or at least the key phrases from the question) and write out the one correct answer