Punnett+Squares

By: Kimanh Nguyen
= //__Punnett square__// =
 * === a diagram used to determine the probability of an offspring having a particular genotype. ===
 * === named after Reginald C Punnett ===
 * === shows every possible combination of one maternal allele with one paternal allele for each gene that is studied in that cross ===



= =

=**Monohybrid cross**=
 * ===Cross involving a single trait===
 * ===Includes true breeding, parental cross, F1 cross, F2 Cross Dominant, F2 Test Cross===

__True Breeding__
(True Breeding- Homozygous Dominant) (True Breeding- Homozygous Recessive)
 * || =A= || =A= ||
 * =A= || ==AA== || ==AA== ||
 * =A= || ==AA== || ==AA== ||
 * || =a= || =a= ||
 * =a= || ==aa== || ==aa== ||
 * =a= || ==aa== || ==aa== ||
 * ===Homozygous Dominant (AA x AA) --->Offspring is 100% Dominant===
 * ===Homozygous Recessive (aa x aa) --->Offspring is 100% Recessive===

__P Generation__

 * ===Homozygous Dominant x Homozygous Recessive (AA x aa)===
 * ===Offspring:===
 * 1) ===Complete Dominance ---> 100% Dominant===
 * 2) ===Incomplete Dominance ---> 100% Hybrid===
 * 3) ===Codominance ---> 100% Both===

__F1 (Filial) Generation__

 * ===Heterozygous x Heterozygous (Aa xAa)===
 * ===Offspring:===
 * 1) ===Complete Dominance ---> 75% Dominant, 25% Recessive===
 * 2) ===Incomplete Dominance ---> 25% Dominant, 50% Hybrid, 25% Recessive===
 * 3) ===Codominance ---> 25% Dominant, 50% Hybrid, 25% Recessive===

__F2 Generation (Dominant)__



 * ===Heterozygous x Homozygous Dominant ( Aa x AA)===
 * ===Offspring:===
 * 1) ===Complete Dominant ---> 100% Dominant===
 * 2) ===Incomplete Dominant ---> 50% Hybrid, 50% Dominant===
 * 3) ===Codominance ---> 50% Both, 50% Dominant===

__F2 Generation (Test Cross)__

 * ===Heterozygous x Homozygous Recessive (Aa x aa)===
 * ===Offspring:===
 * 1) ===Complete Dominance ---> 50% Dominant, 50% Recessive===
 * 2) ===Incomplete Dominance ---> 50% Hybrid, 50% Recessive===
 * 3) ===Codominance ---> 50% Both, 50% Recessive===