Question

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

Answer 1

Mendel observed that recessive traits reappeared in the F2 generation of pea plants in a 3:1 ratio to dominant traits, indicating that recessive traits were not lost but masked by dominant traits in the F1 generation.

Step-by-step explanation:

Mendel's Observation of Recessive Traits

Gregor Mendel concluded that some traits were recessive by observing the inheritance patterns in garden pea plants. When Mendel crossed purebred plants that differed in one trait, the F1 generation exhibited only one of the traits, the dominant trait. However, upon self-crossing these F1 plants, the F2 generation displayed both dominant and recessive traits in a consistent 3:1 ratio, with the recessive trait reappearing in one-quarter of the F2 progeny. This indicated that the recessive trait was not lost but masked in the presence of the dominant trait in the F1 hybrids. Mendel's experiments with traits such as flower color revealed that a plant with a recessive trait, for example white flowers, was devoid of the dominant allele responsible for the dominant trait, violet flowers.

Answer 2

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."

Answer:

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

Step-by-step 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.