A gene that is found on the X or Y chromosome.
Sex-Linked
When two alleles for a gene are the same.
Homozygous
A mapping of the pattern of genetic inheritance in a family.
Pedigree
A picture of chromosomes arranged by pairs and size.
Karyotype
A trait that is masked or hidden.
Recessive
A trait that is expressed.
Dominant
All of the possible genes for a trait, usually shown as letters.
The study of inheritance and how alleles affect offspring.
Genetics
The genes an organism has.
The physical traits that are seen in an organism.
Phenotype
When the two traits are different.
Heterozygous
When two or more genes or alleles are responsible for a trait.
Polygenic
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