When the alleles are different the organism is heterozygous for that trait. Another way of putting it is to say the genotype is heterozygous for that trait. The dominant allele will be seen in the phenotype ie what is displayed.
Most traits are governed by more than one pair of alleles.
2 different alelles - heterozygous Same alelles - homozygous
They are considered to be heterozygous not heterosexual!
homozygous
Homozygous Dominant or Homozygous Recessive, accordingly.
Alleles
When two alleles of a pair are identical, it is referred to as homozygous. When the two alleles are different, it is referred to as heterozygous. Homozygous individuals have two identical alleles (e.g., AA or aa), while heterozygous individuals have two different alleles (e.g., Aa).
They are known as a heterozygous pair
Alleles that are the same = homozygous Alleles that are different = heterozygous
2 different alelles - heterozygous Same alelles - homozygous
They are considered to be heterozygous not heterosexual!
heterozygous
In genetic inheritance, a pair of alleles refers to the two forms of a gene that an individual inherits from their parents. These alleles can be either the same (homozygous) or different (heterozygous). The relationship between a pair of alleles determines how they interact to determine the traits or characteristics of an individual. This interaction is known as Mendelian genetics, where dominant alleles mask the effects of recessive alleles.
Homozygous
homozygous
a combination of two alleles which comprise the gene pair
A gene pair that consists of 2 dominant or 2 recessive alleles is considered homozygous dominant or homozygous recessive.
When there are heterozygous alleles for a gene thy code for a different expression of the gene. For example, the gene to taste PTC paper is a single gene trait. A person will have two copies (or alleles) for that gene (one from their mothers DNA, one from their father). There are two possible expressions for this gene - either you can taste the chemical or you cannot. When one allele is for tasting, and the other for not tasting, this is known as heterozygous. Both alleles are relating to the same gene but they giving different instructions and are thus not identical. When this happens, the dominant gene wins - in this case tasting is expressed. If the alleles are identical, they are known as homozygous and they are identical.