Final Answer:
Mating a True-breeding pink rose plant with a True-breeding pink rose plant will produce A) All pink roses.
Step-by-step explanation:
When mating a True-breeding pink rose plant with another True- A) breeding pink rose plant, the offspring will exhibit a phenotypic uniformity. True-breeding plants, also known as homozygous for a particular trait, consistently pass down the same alleles to their offspring. In this case, both parents are True-breeding pink roses, meaning they carry the same alleles for the pink flower trait. As a result, the offspring will inherit matching alleles from each parent, resulting in the expression of the pink flower trait in all progeny.
The principle underlying this outcome is the Law of Segregation proposed by Gregor Mendel, which states that each individual has two alleles for each trait, and these alleles segregate during the formation of gametes.
When two True-breeding pink rose plants are crossed, both parents contribute the same allele for the pink flower trait to their offspring. Consequently, all the offspring will inherit two copies of the pink allele (PP), leading to the production of all pink roses.
Understanding Mendelian genetics, specifically the principles of segregation and dominance, is essential in predicting the outcomes of genetic crosses. In this scenario, the breeding of two True-breeding pink rose plants results in a predictable and uniform outcome, yielding an entire progeny of pink roses due to the homozygosity of the parents for the pink flower trait.