Ayoung boy has been found, and police are trying to locate his family. they take a dna sample from him and begin collecting dna samples from families who have missing children. if police use dna samples only from the fathers, which type of dna technology can they use to identify the boy's parent? y-chromosome analysis mtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) pcr (polymerase chain reaction) analysis

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

What characteristic make legumes a good food source for food insecure populations

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?