Question

A species of plant produces purple or white flowers. The results of crossing a purple and a white flower and two white flowers are shown in the diagram.

Which of the following terms best describes the purple flowers?

A. hybrid
B. recessive
C. codominant
D. dominant

Answer 1

Answer: Image result for A species of plant produces purple or white flowers. The results of crossing a purple and a white flower and two white flowers are shown in the diagram. Which of the following terms best describes the purple flowers?

Mendel's Experiments

Mendel studied several different traits of a pea plant. For example, some pea plants have purple flowers and others have white flowers. Pea plants can either self-fertilize or cross-fertilize. Crossing two plants is called hybridization.

Step-by-step explanation:

Answer 2

The purple flowers in the cross between a purple and a white flower best match the term 'dominant'. In genetic terms, the purple flower trait is expressed over the white flower trait in a hybrid organism, indicating dominance.

So, the correct answer is D) dominant.

Step-by-step explanation:

The purple flowers are best described by term dominant. In genetics, a dominant trait is one that is expressed in the phenotype of a hybrid organism. Since crossing a purple flower with a white flower resulted in all purple offspring, as Mendel's experiments showed, the purple color is the trait that appears in the presence of a different (white) allele. Therefore, in a cross of a purple flower (Bb) with a white flower (bb), the purple color is dominant over the white color.

A Punnett square exercise would illustrate that if a heterozygous purple flower (Bb) is crossed with a homozygous recessive white flower (bb), the offspring would be expected to have a 1:1 ratio of purple to white flowers. This is because the dominant allele for purple (B) from the purple flower can pair with the recessive allele (b) from the white flower to produce Bb (purple) or bb (white) offspring.

So, the correct answer is D) dominant.