Definitions Flashcards
animal genetics
the study of inheritance in animals
understanding how characteristics are passed through generations
animal breeding
the application of principles of animal genetics to genetically improve farm animals
Mendelian genetics
simple inheritance of genes that express themselves in a defined and predictable manner
Population genetics
the study of factors that affect the gene and genotypic frequencies of populations
Quantitative genetics
the branch of genetics concerned with influences on measurement of relationships among-, rate of change for-, genetic prediction of- traits that are or can be treated as quantitative
Molecular genetics
the study of the chemical nature of genes and how gene functions affect traits of living organisms
Genome
the full DNA of an organism
the entire set of an individual’s genes
natural selection
independent of deliberate human control
allows animals that are the best adapted to their environment to survive and produce the largest number of offspring
seedstock
breeding stock
genes
the basic unit of heredity consisting of a DNA sequence at a specific location on specific chromosomes
chromosomes
long strands of DNA molecules that are organized into pairs
present in nucleus of every sire (paternal) and dam (maternal)
Locus
site of a particular gene
alleles
alternative forms of a particular gene found on a particular locus on a particular chromosome
genotype
genetic constitution of an individual or cell - its molecular makeup (one-locus)
homozygous
both genes at a locus functionally same