Which body of water did not serve a major trade route to constantinople

You need to make 500ml of 7h9(+) media with 1x adn and 30ug/ml of the antibiotic kanamycin. your stock solutions are 10x adn and 30mg/ml of kanamycin. the solvent is distilled water. how much of each component will you need to make the desired final solution?

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome