Which of the following observations led mendel to conclude that some traits were recessive

Hello. This question is incomplete. The full question is:

"Which of the following observations led Mendel to conclude that some traits  were recessive?  A. Plants with a certain form of each trait were more likely to survive  and reproduce than plants with other forms of each trait.  B. The offspring produced during his first set of experiments  expressed one form of a trait, while the offspring produced during  his second set of experiments expressed a different form of the  trait . C. When he crossed plants that expressed different forms of a trait,  one form always "disappeared" and never "reappeared in later  generations.  D. The form of a trait that seemed to "disappear" during his first setto  of experiments "reappeared during his second set of  experiments."

D. The form of a trait that seemed to "disappear" during his first setto of experiments "reappeared during his second set of experiments."

Explanation:

With his experiments, Mendel discovered and answered several questions about heredity. In addition, he conceptualized the terms related to recessive alleles, dominant alleles and how they interfered with the characteristics of organisms.

The material chosen and used in his research was the sweet pea (Pisum sativum). In his experiments, Mendel chose plants with pure seeds, for example, plants with yellow seeds that originate only yellow seeds, plants with green seeds that originate only green seeds. He realized that when crossing these two plants, a feature was not seen in the offspring of his first experiment, but that feature returned to appear in subsequent experiments. With that, he determined what was the recessive characteristic and what was the dominant characteristic.

answer; i believe the correct answer is (replication is not conservative);

the backbone of the dna and rna compound is sugar phosphate.