Welcome to the World of Genetics!!
Contrasting genetic terms
Dominant Allele over powers the recessive alleles, the recessive alleles masks behind the dominant allele. Heterozygous is when there is a dominant and a recessive allele(EX. Pp). Homozygous is two identical alleles(EX. PP or pp). Genotype is the genetic coding(EX. PP, pp, Pp) Pheno type is what the physical apperance of it will be(EX. PP being a Purple plant)
Incomplete Dominance & Codominance
Incomplete domincance is when you have the Dominant trait such as purple being dominant and white being the recessinve. Incomplete dominance would be a purple cat with white spots. Codominance is when you have red and white and being codominant making a pink cat.
Multiple Alleles and how they're used!
Presence of more than two alleles for a genetic trait. Multiple alleles determine what kind of traits you inheritance.
Sex-linked traits are determined by the females, because only the X can have a sex-linked trait. The Y can't carry any sex-linked traits.