In a cross of limnaea, the snail contributing the eggs was dextral but of unknown genotype. both the genotype and the phenotype of the other snail are unknown. all f1 offspring exhibited dextral coiling. ten of the f1 snails were allowed to undergo self-fertilization. one-half produced only dextrally coiled offspring, whereas the other half produced only sinistrally coiled offspring. what were the genotypes of the original parents?

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-