Genetics - Using The Punnett Square

Genetics Using the Punnett Square Compiled by John Emmons http://www.somers.k12.ct.us/~clewis/index.html

Part of studying genetics is learning how to predict the likelihood of inheriting particular traits. This can be easily understood using a tool called the Punnett Square. ,[object Object],The information found here is located at: http://www.somers.k12.ct.us/~clewis/index.html

Next, you put in the genotype of one parent across the top and that of the other parent down the left side. ,[object Object],[object Object],[object Object],[object Object],genetic contribution of one parent G G genetic contribution of the other parent Y Y

Now, all you do is fill in the boxes by copying the row and column head letters across or down into the empty squares. ,[object Object],[object Object],genetic contribution of one parent G G genetic contribution of the other parent Y Y YG YG YG YG

[object Object],[object Object],[object Object],[object Object],offspring genotype possibilities genetic contribution of one parent G G genetic contribution of the other parent Y Y YG YG YG YG

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Now, let’s cross breed two of these YG offspring with each other. genetic contribution of new parent Y G genetic contribution of other new parent Y G YY YG YG GG offspring genotype possibilities

The results of crossing a YG with a YG are TWO possible phenotypes. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Y G Y G YY YG YG GG

For more practice, check out the following websites. Chromosome Kindergarden - http://curriculum.calstatela.edu/courses/builders/lessons/less/les4/casino/cas1ck.html Loud and bossy verses quiet and subdued - http://www.covingtoninnovations.com/cathy/alifepets/genetics1.htm

Genetics - Using The Punnett Square

Recommended

Recommended

More Related Content

What's hot

What's hot (9)

Viewers also liked

Viewers also liked (20)

Similar to Genetics - Using The Punnett Square

Similar to Genetics - Using The Punnett Square (20)

Recently uploaded

Recently uploaded (20)

Genetics - Using The Punnett Square