Explain how an atom becomes an ion.

Why do cells require mitochondria

What does a gene do?

Which process during meiosis causes the zygote to contain either too many or too few chromosomes

When Mendel self-pollinated plants from the purple-flowered F1 generation, he saw that one out of every four plants in the F2 had white flowers. What reasoning did Mendel use to explain how the white, hidden trait reappeared?

What is the relationship between genes and alleles? A. Genes carry instructions for proteins that express traits. Alleles are alternative forms of the instructions. B. Genes are proteins that express traits.

True or false Hydroelectric power plants are built on rivers that are flat and slow moving.

The perception of different colors, such as red, green, or blue, is caused by:

The term evolution was first used by

What improves the body's ability to use the calcium in milk

Dna controls inheritable traits by producing complex molecules called a. amino acids. b. nucleotides. c. chromosomes. d. proteins. 9. how are proteins made? what determines the shape and function of a protein molecule? 10.