Differences among individuals show two common patterns. One type of variation is between "either-or" characters, and the other is when the character varies along a continuum. Explain the underlying genetic differences that contribute to each pattern.

How water is moving through the ecosystem ?

Which u.s. state lists the horned toad as its state reptile?

Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.