How do some cells become brain cells and other become skin cells, when the dna in all exactly the same. in other words, if the instructions are exactly the same, how does one cell be cell and another a skin cell?

Two genes on chromosome 7 of corn are identified by the recessive alleles gl (glossy), which determines glossy leaves, and ra (ramosa), which determines branching of ears.

In some states, populations of mule deer (Odocoileus hemionus) and white-tail deer (O. virginianus) can occupy the same forest habitat and can be found mixing together in certain areas.

In the freshwater food web, the relationship between the minnow and the water fleas can be described as ...

Which of the following statements about the nuclear envelope is false? a. The nuclear envelope is continuous with the Golgi apparatus. b. Molecules pass into and out of the nucleus through nuclear pores. c.

Why is rna polymerase a good name for this enzyme?

Proteins attract water and hold it within blood vessels, preventing it from freely flowing into the spaces between the cells. this is an example of how protein is used for: a. maintaining fluid and electrolyte balance. b. building antibodies. c.

Identify the fuel that could be classified as a nonrenewable or renewable resource. A) biomass B) geothermal C) wind D) tidal

Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enable it to move from the roots to the leaves of plants? a:Water exhibits cohesive behavior.

Whats the process of Asexual Reproduction for Komodo Dragons?

As you add drops of water to the surface of the penny, each drop sticks to the other water droplet forming a large drop on top of the penny. This is caused by which water property? Question options: adhesion cohesion capillary action