Punnett Squares

Punnett Squares


Students will learn how to make a Punnett square to predict the probabilities of resulting genotypes and phenotypes of offspring. 

See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

26 Sophia partners guarantee credit transfer.

226 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 21 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Source: Chris McCarter created with Camtasia

Terms to know from this video:



segregation in meiosis




*Additional:  The male gametes of plants are "pollen" and not sperm.  They do not have tails/flagella.  The image used in the video was to easier distinguish one parent from the other.

Can you answer these?

1.  What would be all the resulting genotypes of the offspring resulting in a cross between one homozygous tall (dominant) pea plant and one heterozygous tall pea plant?


2.  Is it possible to have a heterozygous short pea plant?  Explain.