The Dominance of Blue Trait in Flowered Plants

If a blue flowered plant is crossed with a red flowered plant and all of the offspring are blue, what must be true about the blue and/or red traits?

A. The red trait is a dominant trait

B. Both red and blue are dominant traits

C. The blue trait is a dominant trait

D. The blue trait is a recessive trait

Final Answer:

If all the offspring from a cross between a blue flowered plant and a red flowered plant are blue, it indicates that the blue trait is dominant.

When a blue flowered plant is crossed with a red flowered plant and all of the offspring turn out to be blue, it suggests that the blue trait is dominant. This is an exciting discovery that highlights the power of genetic dominance in determining the traits of offspring.

The dominance of the blue trait in this scenario signifies that the blue allele is expressed even when paired with a red allele. This dominance is a key concept in genetics, where dominant traits mask the presence of recessive traits.

In this case, the blue flowered plant must have carried two copies of the allele for the blue trait, while the red flowered plant had two copies of the allele for the red trait. Since all the offspring exhibit the blue trait, it strongly suggests that the blue allele is dominant over the red allele.

Understanding the concept of dominance in genetics can provide valuable insights into how traits are inherited and expressed in organisms. It is a fascinating area of study that sheds light on the intricate mechanisms of genetic inheritance.