AN INTRO TO
PUNNETT SQUARES
Figure 1.
https://biologydictionary
.net/punnett-square/
WHO AM I? WHY SHOULD YOU TRUST
ME? WHAT WILL I EVEN COVER?
What is a
Punnett
Square?
Explaining
Important
Info!
An Example
of How This
Works!
WHAT IS A
PUNNETT SQUARE?
Punnett Square
A tool that helps show all
possible allelic combinations.
We use this table to find all the
combinations of alleles for a
given trait, in our case, sponge
shape.
But what is an allele?
Figure 2. https://www.biologyonline.com/dictionary/punnett-square
AN ALLELE, A CERTAIN COPY OF A GENE,
HAS TWO DIFFERENT TYPES, THE DOMINANT
ALLELE AND THE RECESSIVE ALLELE
Allele
Dominant
Allele
Recessive
Allele
GENOTYPES ARE THE DIFFERENT COMBINATIONS
OF ALLELES AND PHENOTYPES ARE THE PHYSICAL
TRAITS OF THOSE ALLELES
Genotype Examples
• BB
• Bb
• bb
Phenotype Examples
• Hair Color
• Eye Color
• Sponge Shape
=
PUNNETT SQUARE
EXAMPLE W/
SPONGEBOB
SQUAREPANTS
=
WORKS CITED
Allele - Definition and Examples - Biology Online Dictionary. (2021, June 03). Retrieved
October 26, 2021, from https://www.biologyonline.com/dictionary/allele.
Editors, B. D. (2019, October 05). Punnett Square - Definition, Types and Examples:
Biology. Retrieved October 26, 2021, from https://biologydictionary.net/punnettsquare/.
Genotype and Phenotype. (2021, August 17). Retrieved October 26, 2021, from
https://www.biologyonline.com/dictionary/genotype.
Punnett Square - Definition and Examples - Biology Online Dictionary. (2021, July 21).
Retrieved October 26, 2021, from https://www.biologyonline.com/dictionary/punnettsquare.