Sunday, December 9, 2012

Punnett Squares

Here is some fantastic work from two of my students.  We are learning all about genetics in Life Science.  The assignment was to make a Punnett Square to determine the probability that the offspring of two parents would inherit a certain trait.
Mikala crossed a black pegasus with a white pegasus.  The white fur trait is dominant here. The white pegasus (mother) is heterozygous and the black pegasus (father) is homozygous recessive.  The probability of having a white pegasus offspring is 50%, and a black pegasus offspring is 50%.  Great job, Mikala!

Joey decided to crossbreed Joeys!  He crossed a homozygous long-tailed Joey with a heterozygous long-tailed Joey and determined that 100% of the offspring would be long-tailed, but 50% of the offspring would be homozygous and 50% would be heterozygous! Great job, Joey!