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New Geneics Vocab
Term | Definition |
---|---|
genetics | the study of heredity, or how the characteristics of living things are transmitted from one generation to the next |
heredity | the passing on of traits from parents to their offspring |
alleles | one of the possible forms of a gene |
trait | a characteristic or feature of an organism |
dominant | a gene that is expressed in an organism's phenotype, masking the effect of the recessive allele or gene when present |
recessive | a gene that can be masked by a dominant gene |
genotype | the set of genes in our DNA which is responsible for a particular trait |
phenotype | physical appearance or biochemical characteristic of an organism |
homozygous | when the alleles are identical for a single trait |
heterozygous | when the alleles are different from one another |
punnet square | a diagram that is used to predict the genotypes of a particular cross or breeding experiment |
mutation | occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene |
auto-some | any chromosome not considered as a sex chromosome, or is not involved in sex determination |
sex chromosome | pair of mammal allosomes, determine the sex of an individual created in sexual reproduction |
sex-linked | tending to be associated with one sex or the other |
deoxyribonucleic acid | extremely long macromolecule that is the main component of chromosomes and is the material that transfers genetic characteristics |
ribonucleic acid | single-stranded molecules transcribed from DNA in the cell nucleus or in the mitochondrion or chloroplast |
replication | process of duplicating or producing an exact copy of a polynucleotide strand such as DNA |
nitrogenous bases | a nitrogen-containing molecule that has the same chemical properties as a base |
nucleotide | the structural components, or building blocks, of DNA and RNA. |