the particular position on homologous chromosome of a gene
having 2 identical alleles of a gene
having 2 different alleles of a gene
the alleles (genes) of an organism
the physical characteristics of an organism
an allele with same effect on phenotype whether it is present in homo or heterozygous state
an allele that only has an effect on the phenotype when present in homozygous state
pair of alleles that both affect the phenotype when present in heterozygote
an individual that has one copy of recessive allele that causes a genetic disease in individuals that are homozygous for this allele
testing a suspect heterozygote by crossing it with a known homozygous recessive
offspring of f1, allowed to self fertilize
A blood group
IAIA or IAi
B blood group
IBIB or IBi
relatively large; carries many genes
females have 2 copies, males have 1
much smaller; carries only a few genes
Sex linked genes
genes located on X chromosome
combinations of genes tend to be inherited together because of their loci being close together on the same chromosome
the reassortment of genes or characteristics into different combinations from those of the parents
crossing over allows recombination of linked genes; all of the genes that have their loci on the same chromosome form a linkage group
a single characteristic that is controlled by 2+ genes
number of possible genotypes there are for a polygenic character that is controlled by 2 genes each with 2 alleles
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