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aristocracy a high-ranking social class, having special privileges and influence and usu. determined by heredity. [1/5 definitions]
caste any social grouping in a society that is based on heredity, wealth, or the like. [1/4 definitions]
caste system a social structure in which one's class in society is determined by heredity.
cytogenetics (used with a sing. verb) the study of heredity using the sciences of cytology and genetics.
familial passed on to individuals through heredity. [1/2 definitions]
fosterling a child to whom parental care is given by someone not related to him or her by law or heredity; foster child.
genetic of or concerning the science of heredity. [2/3 definitions]
genetics (used with a sing. verb) the science of heredity, esp. of the influence of genes on the appearance, development, and evolution of organisms. [1/2 definitions]
Mendel's laws the basic principles of heredity discovered by Mendel, showing that certain characteristics are inherited separately as units, that cells contain pairs of such unit characters, and that in every individual there is a pair, one from each parent, of determining factors for each unit character.
modification in biology, a physical change in an organism that is caused by environment and not heredity. [1/5 definitions]
propagate to transmit by heredity. [1/6 definitions]