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

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

it marks things for degradation via the proteasome. it alters there celluar location.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.