The DNA profiles used as evidence in a murder trial look something like supermarket bar codes. The pattern of bars in a DNA profile showsa. the order of bases in a particular gene.b. the presence of various-sized fragments of DNA.c. the presence of dominant or recessive alleles for particular traits.d. the order of genes along particular chromosomes.

Genetic profiles are used to determine whether Sam could be the father of Becky's baby. Sam is not the father if __________ genetic profile shows some bands not present in __________ genetic profile.

Genetic profiles used as evidence in a murder trial look something like supermarket bar codes. The pattern of bars in a genetic profile shows __________.

Imagine you have found a small quantity of DNA. Fill in the following diagram, which outlines a series of DNA technology experiments you could perform to study this DNA. a. b. c. d. e.

A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of an extinct dodo (a bird). To compare a specific region of the DNA from a sample with DNA from living birds, which of the following would be most useful for increasing the amount of dodo DNA available for testing?a. SNP analysisb. polymerase chain reaction (PCR)c. electroporationd. gel electrophoresis

Why does DNA profiling rely on comparing specific genetic markers rather than the entire genome?

A friend who works in a research lab performed a GWAS and discovered a tight association between a SNP allele and the disease she is studying. She concluded that the SNP allele must be the mutation that causes the disease. Explain why she is likely to be wrong.

A friend who works in a research lab performed a GWAS and discovered a tight association between a SNP allele and the disease she is studying. She concluded that the SNP allele must be the mutation that causes the disease. Explain why she is likely to be wrong.