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The different forms of a gene
Allele
An allele whose trait always shows up in the organisms when the allele is present
Dominant allele
An allele that is masked when a dominant allele is present
recessive allele
Having two identical alleles for a trait
homozygous
Having two different alleles for a trait
heterozygous
An organisms genetic makeup, or allele combinations
genotype
The physical traits that appear in an individual as a result of its genotype
phenotype
A blended phenotype. One allele is not completely dominant over the other
incomplete dominance
both alleles of a gene are present in the phenotype
codominance
when traits are determined by alleles on the sex chromosomes
sex-linked
Coiled chromatin, 46 are found in human body cells
chromosome
a cell containing only one set of chromosomes - gametes
haploid
XX is what gender?
female
Genotypic probability of having AA offspring from crossing Aa x Aa
25% AA
Genotypic probability of having Aa offspring from crossing AA x Aa
50% Aa
Genotypic probability of having aa offspring from crossing aa x AA
0% aa
