11. Co-dominance: in genetics, an instance in which two different but equally powerful genes produce a phenotype in which both genes are expressed12. Carrier: in genetics, individuals who possesses a recessive gene associated with a disease who can transmit the gene for the disease to their offspring even though they do not have the disease13. Sex-linked: an attribute determined by a gene that appears on one of the two types of sex chromosomes, usually the X chromosome.14. Poly-genetic: influenced by multiple pairs, interacting with multiple environmental factors, rather than by a single pair of genes15. Single gene: genetic mechanism through which a characteristic is influenced by only one pair
16. Chromosomal abnormalities (70-71 & lecture)- child receives too many, or too few chromosomes (or abnormal chromosomes) at conception and know examples of each (see Table 3.3, p. 72). 17. Know about:i.Know percent of genetic relatedness among parent/child, sibs, grandparents, etc. (lecture).