Describe three ways mutations can occur.

Describe how a student could use a microscope to compare the size of frog skin cells to the size of human skin cells.

if threads are layered from top to bottom brown green red which layer will come into Focus first if you are using the microscope properly

What criteria is necessary for natural selection to occur

Cell city what is the widget?

What does gel electrophoresis do? A. Makes one DNA sample into many copies B. Separates DNA fragments so they can be seen c. Illustrates which chromosomes are present D. Cuts strands of DNA at specific sites

All living things are made of cells. What might be a major difference between cells that are found in human skin and human nerve cells?

I live in wet land, I respire through roots

What do scientist think causes the movement of earth's plate?

If a normal human cell has 46 chromosomes how many chromosomes will it's daughter cell have?

Differentiate between sexual and asexual reproduction