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Welcome! Today we will explore how your body gets its unique traits using a secret instruction manual inside your cells.
Inside almost every cell in your body, there is a set of instructions. These instructions are stored on long, thread-like structures called chromosomes, which are made of DNA.
A gene is a specific section of a chromosome. Each gene acts like a single recipe, telling your body how to build a specific trait like eye color or height.
Offspring inherit these genes from their parents. By passing down chromosomes, parents pass down the specific genes that determine the traits of the next generation.
Let us analyze how a young plant gets its red flowers. We want to explain the connection between its chromosomes, genes, and this visible trait.
- Identify the trait: The trait we are looking at is the flower color, which is red.
- Locate the instructions: This red color is controlled by a specific recipe, called a gene, located on one of the plant's chromosomes.
- Trace the inheritance: The young plant received this chromosome containing the red-flower gene from its parent plants.
- Explain the function: The gene inside the chromosome sends active instructions to the plant's cells to produce red pigment, resulting in red flowers.