Avery, macleod, and mccarty (1944) demonstrated that dna was the genetic material by treating heat-killed streptococcus pneumoniae s (smooth) strain with dnase, thereby preventing transfer of the "transforming substance" from the killed s strain to the live r (rough) strain when the two were mixed together and injected into mice. another way that one could demonstrate transformation in bacteria would be to extract dna from:

What is the name for a substance formed in a chemical reaction

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

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-