John and sue are expecting a child, but are concerned about a rare autosomal recessive disease that is present in both of their families. in the pedigree, john is represented as individual iii‑11 and sue is represented as individual iii‑12. john's sister, iii‑10, and sue's brother, iii‑13, both do not show evidence of the disease, but john's paternal grandmother and sue's maternal grandfather both had the  disease. assign the appropriate symbol to each individual in the  pedigree.

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?