It means the individual has two different alleles for a trait, for example; Aa, Tt, Bb, etc.
Dd is the heterozygous genotype for dimples.
Yy is a heterozygous genotype. Homozygous would be YY or yy.
A heterozygous genotype
One can determine whether a genotype is heterozygous or homozygous by looking at the alleles present. If there are two different alleles for a particular gene, the genotype is heterozygous. If there are two of the same alleles, the genotype is homozygous.
A Heterozygous genotype means an organism that has both the dominant and the recessive gene.
The most accurate description of an organism with genotype AaBb is heterozygous. A homozygous genotype is aaBB and AA.
A heterozygous genotype, is the genetic makeup of different alleles.
The heterozygous genotype
BIBOB
NERd
Rr heterozygous
Heterozygous