Punnett Square Examples of Codominance



Punnett Square Examples of Incomplete Dominance and Codominance

Incomplete dominance

Incomplete dominance is types of inheritance of traits where both alleles are neither _____________ nor_______________. Alleles show incomplete dominance when the offspring’s phenotype is a combination of the parents’_____________. Roses have incomplete dominance for the red color and white color alleles. In the below example a red rose with the alleles (____) is crossed with a white rose with the alleles (___). The genotype for all the offspring is (___) and the phenotype for all the offspring will have _______________ roses. ___________ percent of the roses will produce pink roses and ________ percent will have the genotype of (_____).

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What will happen if two pink roses are crossed?

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The probability of having a red rose purebred (RR) is __ out of 4 or ___ percent. The probability of having pink rose hybrid (RW) is __ out of 4 or ___ percent. The probability of having a white rose purebred (WW) is __ out of 4 or ___ percent.

Examples of Codominance

Codominance is types of inheritance of traits where both alleles are also neither _________________ nor ____________. This occurs when both alleles can be observed in a phenotype. Instead of a blend of the two in________________ ______________, both alleles get mixed up and show in the offspring. In the above example of red and white flowered plants, the offspring may show up white flowers with freckles of _______ spots which indicate codominance in the sense that both ___________ are showing up but neither is dominant.

In brief:

• _____________ ______________ and _____________ are types of inheritance of traits where both alleles are neither dominant nor recessive.

• In incomplete dominance, the resulting trait is a ___________ of the traits of parents whereas in codominance, both traits show up in the_________________.

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