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2nd 9 weeks FINAL
corrections for final exam
| Term | Definition |
|---|---|
| Protein Synthesis | process by which the genetic code puts together proteins in the cell |
| Transcription | a segment of DNA is copied to make mRNA in the cell's nucleus. |
| Nucleotide | the monomer of DNA, composed of a nitrogen base, sugar, and phosphate |
| Hydrogen bond | force that holds nitrogen bases together |
| Adenine | nitrogen base that pairs with Thymine |
| Thymine | nitrogen base that pairs with Adenine |
| Cytosine | nitrogen base that pairs with Guanine |
| Guanine | nitrogen base that pairs with Cytosine |
| Genetic code | common to all organisms, determined by the sequence of bases in the DNA of all living things |
| Meiosis | also known as reduction division; process that makes different gametes |
| Mitosis | body cell division; makes identical cells |
| Nucleic Acid | biomolecule that holds genetic information, monomer is the nucleotide |
| Zygote | a diploid cell formed by fertilization |
| mRNA | segment of copied DNA that carries the information from the nucleus to the ribosome |
| amino acids | building block of all proteins |
| Translation | mRNA attaches to the ribosome, and is decoded by tRNA to make proteins |
| Mutation | permanent change in a gene or chromosome |
| Inherited mutations | occur in the germ line |
| Chromosome | condensed DNA wrapped around protein |
| Chromosomal Mutation | permanent alteration in the number or structure of a chromosome |
| Gene | segment of DNA that codes for a protein |
| Allele | different versions of a gene that produce different traits |
| Dominant allele | stronger trait that is always expressed |
| Recessive allele | weaker trait that is only expressed when second allele is the same |
| Genotype | set of 2 alleles for a particular gene |
| Phenotype | physical trait that you can observe |
| Homozygous | same allele; purebred |
| Heterozygous | different alleles; hybrid |