An orchid breeder crosses two types of orchids, one that is tall with a petite bloom and one that is short with a large bloom, with the goal of obtaining a tall orchid with a large bloom. The first cross yields all short flowers with petite blooms. What is the expected yield of tall orchids with large blooms if bred from the first generation

If orchid plants with two pairs of contrasting characteristics like tall/petite and short/large seeds are crossed the F1 progeny would have all tall plants with petite bloom according to the large bloom of dominance. This implies that tallness is dominant over shortness and the petite bloom is dominant over large bloom. In F2 progeny, there would be some tall plants with petite blooms and short plants with large blooms. However, there would be some plants with recombination of characters such as tall plants with large blooms and short plants with petite blooms. This depicts that tall-short and petite/large traits are inherited independently of each other following law of independent assortment. which states that when two traits are taken in a cross the segregation of one trait is independent of the segregation of other characters.

Phenotypic ratio:9/16 Tallshort : 3/16 Tall petite : 3/16 Tall Large : 1/16 Short Petite ( 9:3:3:1).

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