The gene frequency for a particular trait in a population in Texas was determined to be 80% X (dominant) and 20% x (recessive allele). Twenty years later, the gene frequency was determined to be 65% X and 35% x. What does this change indicate about the gene pool? (1 point)

• It lacks nutrition.
O It has become predominantly
recessive.
• It is evolving.
• It has remained stable.