Here's why:
* Chromosomes segregate independently during meiosis: When cells divide to produce gametes (sperm and egg), the pairs of chromosomes separate randomly. One chromosome from each pair goes into each gamete.
* Genes on different chromosomes are packaged separately: Since genes are located on chromosomes, genes residing on different chromosomes are physically separated.
* Independent assortment during meiosis: Due to the random segregation of chromosomes during meiosis, genes located on different chromosomes are also sorted independently into gametes.
Think of it like this: Imagine you have two pairs of socks, one red and one blue. During meiosis, these "sock pairs" (representing chromosomes) separate randomly. You could end up with a gamete containing a red sock and a blue sock, or a gamete containing two red socks, or a gamete containing two blue socks.
Important note: This independent assortment only applies to genes on different chromosomes. Genes on the same chromosome are linked and tend to be inherited together unless crossing over occurs.
