A mother expresses the symptoms for Huntington's disease, an autosomal dominant trait. What are the chances that her offspring would carry a mutated allele if her partner is unaffected by the disease?
A. 0–25%
B. 25–50%
C. 50–100%
D. 75%
E. 100%
Answer: C
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Why can eggs be larger than other cell types?
a. eggs contain a large store of nutrients b. eggs do not perform exocytosis c. other cell types need higher concentrations of glucose d. other cell types divide when they get too large e. other cell types require phospholipids for organelle membranes
In a dicot stem, what is the ring of cells that includes the xylem?
A) apical meristem B) vascular cambium C) cork cambium D) epidermal tissue
Legumes secrete ____ to attract rhizobial bacteria in low nitrogen soils
a. cytokin b. flavonoids c. nod factors d. calcium e. water
What types of behaviors would you predict would be controlled by quorum sensing?
A. Behaviors effective for single bacteria B. Behaviors effective for groups of bacteria C. All behaviors D. Only virulence behaviors