Combination of alleles an organism has for each gene.
Phenotype
The physical appearance of a trait in an organisation.
Characteristic that results from the combination of alleles and the environment.
Dominant
Characters are expressed.
Dominant trait refers to a genetic feature that “hides” the recessive trait in the phenotype of an individual.
Capital letter.
Recessive
Their characteristics are suppressed.
The term recessive describes a trait that is covered over( or dominated) by another form of that and seems to disappear.
Lowercase
Homozygous
Two alleles that are the same for a trait (pure).
Heterozygous
Two different alleles for a trait (hybrid).
Variant
Different versions of a gene.
Genes and the environment can influence the characteristics of an organism:
It's not only genotype that can affect an organism's phenotype — interactions with the environment (the conditions in which the organisms lives) can modify a phenotype.
Most variation in phenotype is determined by a mixture of genetic and environmental factors.