With the help of an example,differentiate between incomplete dominance and co-dominance.

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(N/A) Incomplete dominance is a phenomenon where the $F_1$ generation phenotype does not resemble either of the two parents but is an intermediate between them. For example,in snapdragon ($Antirrhinum$ $sp.$),a cross between red-flowered $(RR)$ and white-flowered $(rr)$ plants results in $F_1$ progeny with pink flowers $(Rr)$.
Co-dominance is a phenomenon where the $F_1$ generation resembles both parents simultaneously. $A$ classic example is the human $ABO$ blood grouping system,where both $I^A$ and $I^B$ alleles are expressed equally in the $I^A I^B$ genotype,resulting in $AB$ blood type.
Allele from Parent $1$ Allele from Parent $2$ Genotype of offspring Blood type of offspring
$I^A$ $I^A$ $I^A I^A$ $A$
$I^A$ $I^B$ $I^A I^B$ $AB$
$I^A$ $i$ $I^A i$ $A$
$I^B$ $I^A$ $I^A I^B$ $AB$
$I^B$ $I^B$ $I^B I^B$ $B$
$I^B$ $i$ $I^B i$ $B$
$i$ $i$ $i i$ $O$

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