With incomplete dominance, what phenotype is seen when there is a heterozygous genotype present?

An intermediate phenotype between the homozygous genotypes parents.

Explanation:

Dominance in genetics, refers to the phenomenon in which one variant (allele) of a gene on a chromosome masks or overrides the effect of the other variant of the same gene on the other copy of the chromosome.

Different kinds of dominance include; complete dominance, incomplete dominance, and co-dominance.

Incomplete dominance occurs when the phenotype of the heterozygous genotype appears different from the phenotypes of the homozygous genotypes and it is often intermediate.

For example, when a cross between an RR with an rr yields an Rr, we have an incomplete dominance.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.