From a hospital patient afflicted with a mysterious illness, you isolate and culture and then purify DNA from the culture. You find that the DNA sample obtained from the
culture contains two different kinds of DNA: one was labeled as double-stranded
human DNA and the other was labeled as single stranded viral DNA. However, a
mix-up occurred and the labels were accidentally removed from the test tubes. How
can you figure out which test tube contains which DNA, if you only have access to
the nucleotides in each sample? (2 marks)

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?