What kinds of general observations cause one to conclude that development is the result of variable gene activity?
What will be an ideal response?
Individual cells of multicellular organisms produce different gene products, and each apparently has an equal genomic complement.
You might also like to view...
Active transport in plant root cells requires that those cells have access to O2. Normally there is enough O2 available
in air pockets in the soil, but flooded soil has very little O2. Thus, unless they have special adaptations, plants in flooded soil effectively have no active transport in their roots. Which of the following should you expect to occur for trees without special adaptations to flooding after several days in flooded soil?
a. excess uptake of water and minerals in the xylem only b. wilting of their leaves c. bursting of leaf cells due to excess water flow d. excess water pushed out at the margins of their leaves only e. excess uptake of water and minerals in the xylem, and excess water pushed out at the margins of their leaves
How do humans use red algae polysaccharides?
A. Adhesives B. Detergents C. Thickeners D. Herbicides
Essentially all exchange of gases and other materials between the circulatory system and tissues of the body or the outside world (e.g., in the lungs) occurs in the
A. capillaries. B. arteries. C. veins. D. heart. E. lymphatic system.
Prevention of patient-to-personnel transmission of disease keys on limiting contact with
A. patients. B. personnel. C. administrators. D. physicians. E. body fluids.