Donita is a firearms investigator. She collects evidence on a suspect's skin and clothing for gunshot residue. Which of the following tests are best used for skin and which is best for clothing?
Donita uses
to collect evidence from the suspect's skin for gunshot residue. She uses
to collect
evidence from the suspect's clothing,

Use this new information to determine the parents’ genotypes (indicated by red arrows). then calculate the probabilities that the second male offspring will have each condition. drag one pink label to each pink target and one blue label to each blue target. then use the white labels to answer questions 1 and 2. labels can be used once, more than once, or not at all.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.