Bases holding two single strands of DNA together into a double strand of DNA interact through ___________ bonds. 

A phenotype is 

A rock sitting on top of a hill has _____ energy.  While rolling down the hill the rock would have _____ energy.

When chromosomes duplicate, they form

.   What is the carbon source used in photosynthesis?  

The stored energy in food is converted by cells into this useable energy-containing molecule.  

Which describes a genotype heterozygous for a single trait?

A particle of light energy is called a:  

The start codon is ______ and also codes for the amino acid _____.

The color of an object we see is the color that it