Kalıtım Olasılık Sorusu

$A_o \times A_o$ çaprazlaması sonucunda $aa$ genotipli birey bulunma ihtimali nedir?

Soruda görsel içerik var: The image shows a handwritten Punnett square-style genetic cross for two heterozygous organisms ($A_o \times A_o$). It depicts a cross between two individuals with genotypes $A_o$ (where 'o' likely represents the recessive allele 'a'). The resulting genotypes are listed below the cross as $AA$, $A_o$ (twice), and $aa$. A text query asks for the probability of the recessive genotype ($aa$) occurring.