Question

Explain incomplete dominance, using snapdragon flowers as an example

Answer 1

Answer:

Incomplete dominance is a type of interaction takes between two different alleles of a gene in which one allele can not express itself completely over the other allele.

It results in the production of third phenotype which is usually the intermediate of the two parental traits.

For example, when plant bearing red colored (dominant trait) snapdragon flower is crossed with the plant having white (recessive trait) flowers, it resulted in the production of the plants with pink flowers (intermediate of red and white).

When pink flowered plants were crossed they resulted in the production of plants with three types of phenotype.

The genotype and phenotype ratio were same: 1 (RR, red) : 2 (Rr, pink) : 1 (rr, white).

Answer 2

Answer:

Incomplete dominance is seen in offspring that have a third phenotype not seen in the parents. Snapdragons are an example. The third phenotype results when a snapdragon with the red pigment protein crosses with a snapdragon with a defective gene that produces no pigment, resulting in a white snapdragon. The offspring receive one allele from each parent, resulting in half the amount of pigmentation for red color being expressed. The offspring will be pink snapdragons instead of red or white.

Explanation:

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