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chapter 5 heredity
Term | Definition |
---|---|
Heredity | a passing trait from a parent to offspring |
alleles | an alternate form of that a gene may have for a single trait; can be a dominant or recessive. |
genetics | the study of how traits are inherited through the actions of alleles |
hybrid | an offspring that was given different genetic information for a trait from each parent. |
dominant | describes a trait that covers over or dominant another form of that trait. |
recessive | describes a trait that is covered over |
punnet square | a tool to predict the probability of certain traits in an offspring |
genotype | the genetic make up of an organism |
phenotype | out ward physical appearance of an offspring |
homozygous | describes an organize with 2 alleles |
heterozygous | describes an organism with 2 different alleles. |
incomplete dominance | product of a phenotype. |
polygenic inheritance | happens when a group of genes act together |
sex-linked gene | an allele inherited on a sex chromosome |
genetic engineering | biological and chemical methods |
trait | a distinguishing quality or characteristic, typically one belonging to a person |