Part a: interphase
just before meiosis begins, the chromosomes are replicated.
1. use ten beads and a centromere of one color to construct the long
chromosome. use ten beads and a centromere of a second color to construct
the second chromosome in the long pair. make a drawing of the
chromosomes in the space below.
2. for the second pair of chromosomes, use only five beads.

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture

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.