Human skin cells, blood cells, and immune cells all contain the same number of chromosomes and the same sequence of genes. What allows them to each perform such different specialized functions?

1.Random mutations occur as cells grow and divide which changes their function

2.The ability to erase certain sections of their genes

3.The ability to rewrite their DNA sequence as they grow and change

4.The ability to regulate gene expression within each different type of cell

Which test would show positive results for orange juice

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.

What’s a example of extrusive rock that cooled to quickly for grains to form