Here's a breakdown:
* Alleles: Different versions of the same gene. For example, a gene for flower color could have an allele for purple flowers and an allele for white flowers.
* Gametes: Sex cells (sperm and egg) that carry one allele from each pair of genes.
* Segregation: The separation of these alleles during gamete formation.
How it works:
1. Diploid cells: Regular body cells have two copies of each chromosome, one from each parent, meaning they have two alleles for each trait.
2. Meiosis: This is the process of cell division that produces gametes. During meiosis, the chromosomes duplicate and then separate, so each gamete receives only one copy of each chromosome.
3. One allele per gamete: This means each gamete receives only one allele for each trait.
Example:
Let's say a plant has the alleles "P" for purple flowers and "p" for white flowers. During meiosis, the alleles separate, so one gamete will receive the "P" allele, and another will receive the "p" allele. This ensures that offspring inherit one allele for each trait from each parent.
Important note: This principle explains why offspring can inherit traits from both parents, and why there can be variation in traits within families.
