Assume that this is one of Santhi's chromosomes obtained from a sample of her blood. This chromosome is composed of two chromatids joined by a centromere. Which of the following statements is INCORRECT? The cell that contains these sister chromatids must be diploid. The sister chromatids were formed by replicating a single chromatid. The sister chromatids were joined by fertilization, bringing together a maternal and paternal chromatid.

Common commercial benefits of microorganisms include synthesis ofa. insulin.b. antibiotics.c. aspirin.d. antibiotics and aspirin.e. antibiotics and insulin.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Arepair man charged $93.06 the price included 2 hours of labor and 40 service charge how much does the repairmen charge per hour for labor?