Final answer:
The proportion of t alleles in the lizard population is 0.36 or 36%. The allele frequency for the dominant allele is 0.64 or 64%. The percent of the population that would be heterozygous is 0.46 or 46%.
Step-by-step explanation:
To find the proportion of t alleles in the lizard population, we need to determine the frequency of the recessive allele. Since 18 out of 50 lizards have the recessive allele, the proportion of t alleles would be 18/50, which simplifies to 0.36 or 36% (a).
To find the allele frequency for the dominant allele, we can subtract the recessive allele frequency from 1. Since the recessive allele frequency is 0.36 or 36%, the allele frequency for the dominant allele would be 1 - 0.36 = 0.64 or 64% (b).
To find the percent of the population that would be heterozygous, we can calculate 2pq, where p is the dominant allele frequency and q is the recessive allele frequency. Using the allele frequencies from part (a) and (b), the heterozygous proportion would be 2 * 0.64 * 0.36 = 0.46 or 46% (c).