A recent research breakthrough on genetic control of tooth formation showed that certain ________ that lacked a particular gene produced ________ teeth.
Fill in the blank(s) with the appropriate word(s).
Answer: mice, extra
You might also like to view...
Calculate the R-value for the following materials: (a) 4-in.-thick brick and (b) 12-in.- thick concrete slab.
What will be an ideal response?
Trumpet trees (Tabebuia caraiba), a dry-season deciduous tree, would likely be found in which of the following biomes?
A) Desert B) Tropical rain forest C) Midlatitude grassland D) Tropical seasonal forest and scrub
The acceptance of global energy change is difficult because fossil fuels power most of the world
economies. Indicate whether the statement is true or false.
The most common measure of density, the number of people per area of land, is known as ________ density
A) arithmetic B) physiological C) mathematic D) geometric E) agricultural