1. Which of the following factors may contribute to a population maintaining Hardy-Weinberg equilibrium? (1 point) -The population is interbreeding with another species.
-There are individuals migrating into or out of the population.
-The population size is very small.
-There are no mutations in the DNA of the population.

2. A population of lizards carry a gene for scale color in which the dominant allele produces green scales while the recessive allele codes for brown scales. In the first generation, you determine that 75% of the population is green and 25% of the population is brown. In the second generation, you determine that 50% of the population is green and 50% of the population is brown. Finally, in the third generation, you determine that 25% of the population is green and 75% of the population is brown.
Which of the following correctly explains this change in the genotype frequencies? (1 point)
-The lizards mate randomly with each other.
-The brown color is an adaptation that is being selected by the environment.
-The lizards remain isolated from other lizards, only mating with lizards in their own population.
-The DNA of these lizards carries no mutations from one generation to the next.