A cross of a white horse(WW) and a red horse (RR) produces all Roan (RW) offspring. This type of inheritance is called incomplete dominance.
What is Inheritance?
Inheritance may be defined as the process through which traits or information from one generation of individuals or cells gets passed on to the next generation during the segregation of two distinct gametes.
Incomplete dominance may be defined as a phenomenon in which the F1 hybrid exhibits characters intermediate to the parental genes.
The same principle is seen in this question as well. The segregation of two parental gametes white horse (WW) and red horse (RR) produces all roan (RW) in the F1 generation that possesses intermediate characteristics to both parental genes.
Therefore, a cross of a white horse(WW) and a red horse (RR) produces all Roan (RW) offspring. This type of inheritance is called incomplete dominance.
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