Symbolically describe the inheritance of seed colour in a pea plant.
Answers
Explanation:First, we’ll need a few terms to get us started. A trait is a characteristic, such as eye color or seed color. The way a trait shows up is termed its expression. For example, you might say that for a person with brown eyes, the gene for brown eye color is expressed. Brown eyes are one expression of eye color; blue eyes are another expression. In the same manner, yellow and green are the two expressions of the gene for seed color.
To begin his experiments, Mendel created groups of "pure parent" plants. These are plants whose offspring consistently possess a given trait through successive generations. For the experiment on pea seed color, Mendel selected a group of plants that consistently produced offspring with only yellow-seeded peas—that is, in which yellow is expressed. At the same time, he selected a group of plants that always produced offspring with green-seeded peas.
Once he had his "pure parents, " Mendel crossed the two groups of plants. He took pollen from one of the groups, and pollinated flowers on the other group, and vice versa. He continued to care for the plants until they developed fruit—the pea pods. Once the enclosed seeds were mature, he harvested and planted them, and let these new plants grow to maturity. Then he carefully recorded his observations about the color of their seeds. These first offspring, produced by crossing two pure parents, are termed the F1—short for first filial—generation.