two alles are the same
two alleles that are different
Phenotype & Genotype
1. the physical appearance of an organism
2. the alleles(letters) that an organism inherits
The diagram of inheritance of a trait through a family
An individual who is heterozygous but does not show the recessive trait
Universal donor and recipient
d= type O blood, r= type AB blood
Different versions of a trait
An overpowering trait that requires inheriting only one allele
A weaker trait that requires inheriting two of the same alleles.
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