How do some cells become brain cells and others become skin cells, when the DNA in ALL the cells is exactly the same. In other words, if the instructions are exactly the same, how does one cell become a brain cell and another a skin cell?

There are economic concerns surrounding the products that have been genetically engineered for particular traits, including pharmaceuticals, crops, and enzymes that are used in industry and manufacturing processes.

Why are the two phases of meiosis important for gamete formation

Which species has a more imminent danger of extinction throughout all of its range? endangered species threatened species endemic species invasive species indigenous species?

Compare and contrast serine proteases and aspartic proteases by completing the phrases. drag each answer to the appropriate blank (target). not all answers will be used.

A cage containing male mosquitoes has a small earphone placed on top, through which the sound of a female mosquito was played. All the male mosquitoes immediately fly to the earphone and thrust their abdomens through the fabric of the cage.

Which is a renewable resource? A) coal B) sunshine C) gasoline D) natural gas

How are fitness and adaptation important to natural selection?

Where do the light-independent reactions of photosynthesis occur? A. Stroma B. Thylakoids C. Cell cytoplasm D. Intermembrane space

What causes pioneer grasses and weeds that have grown in an abandoned field to die?

What specific event triggers the uncovering of the myosin binding site on actin?