| A | B |
|---|
| allele | a specific form of a gene that provides instructions for making a particular protein molecule |
| chromosome | a long piece of DNA that contains many genes |
| DNA | a type of molecule that genes and chromosomes are made of |
| feature | a characteristic that all members of a species have |
| fertilization | when a male and a female reproductive cell combine to create an offspring |
| function | how something works |
| gene | an instruction for making a protein molecule |
| gene version | a specific form of a gene that provides instructions for making a particular protein molecule |
| heterozygous | having gene versions that are different |
| homozygous | having gene versions that are the same |
| inherit | to receive genes from a parent |
| mutation | a random change to a gene that sometimes results in a new trait |
| nonfunctional protein | a protein molecule that does not perform its function |
| nucleus | the part of a cell where genes are found |
| offspring | an organism produced as a result of reproduction |
| protein molecule | a type of large molecule that performs important functions inside organisms |
| ribosomes | the parts of the cell that build protein molecules based on instructions from genes |
| sexual reproduction | the process in which two parents pass on their genes to create offspring |
| structure | the way something is shaped or constructed |
| trait | a specific characteristic of an individual organism |
| variation | any difference in traits between individual organisms |
