Directional selection acts against:

both extremes simultaneously in the variation of the trait

one of the extremes in variation

the average or mean value for the population

none of these

Tubulin may assemble and disassemble simultaneously in a process known as Tubulin may assemble and disassemble simultaneously in a process known as dynamic instability. treadmilling. microtubule organizing. MAP motoring. actin-regulated assembly.

What is the relationship between a gene and a allele

What movement take place in the body that you do not have to think about

Many insects have become resistant to pesticides. in which population of insects would you most expect pesticide resistance to develop?

What is the role of these bacteria in the nitrogen cycle?

When you look out the window, you can see constantly moving air. air is cycled in order to reach equilibrium. B) since these change the density of air and we know the air flows from the region of high density to the region of low density.

What effects do deforestation have on the animals?

Which best defines a diploid cell during meiosis? a cell that has double the number of chromosomes as the parent cell a cell that has half the number of chromosomes as the parent cell a cell that has double the number of chromosomes as the daughter

What is the best definitionof magnetosphere? a. a magnetosphere is a magnetic field around earth. b. a magnetosphere is the groups of atoms that are lined up inside a magnet. c.

True or false: tertiary sources can draw from, or summarize, a secondary source.