How did Darwin explain the similarities between organisms in South America and the Galápagos islands? He suggested that identical organisms were in both places.

He suggested that a few organisms came to the islands from the mainland and changed over time.
He suggested that all the organisms originated in North America.

He suggested that a small number of organisms broke off the island and populated South America and changed over time.

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

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-

Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .