Here's why:

* Chromosomes are long strands of DNA: DNA contains the genetic instructions for an organism. Genes are specific segments of DNA that code for particular traits.

* Each parent contributes one chromosome from each pair: During sexual reproduction, each parent contributes one chromosome from each pair to their offspring. This means the offspring receives half of its genetic material from its mother and half from its father.

* Chromosomes carry these genes to the offspring: When the sperm and egg cells combine, the chromosomes from both parents come together, carrying the genes that determine the offspring's traits.

Therefore, chromosomes act as carriers of genes from parents to offspring, ensuring the inheritance of genetic information across generations.