Explain why the crossing of 2 hybrid parents only results in a 25% percent chance of having a child with blue eyes according to a punnett square.

The crossing of two hybrid parents results in only a 25% chance of having a child with blue eyes, because the alleles responsible for blue eyes are resective and will only appear in resessive hom0zygosis.

Explanation:

Blue eyes are determined by recessive alleles, which will be represented by the letter "b" in the punnett square. As you may already know, recessive alleles are only expressed in the presence of another recessive allele, in a system called recessive hom0zygosis (bb). In a cross between hybrid parents, that is, with heterozygous (Bb) alleles, the chances of their children having blue eyes are very low and represent a 25% probability, as can be seen in the punnett squad shown below.

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