Duchenne muscular dystrophy is an X-linked recessive disorder. A Punnett square is shown. The columns are labeled Upper X m and Upper Y. The rows are labeled x Upper M and x m. What is the probability that a female offspring of the cross that is shown above would have a recessive allele for Duchenne muscular dystrophy disorder? 0 percent 25 percent 50 percent 100 percent

Two critical interventions to turn around the opioid crises are:

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.