If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.
What is it called when offspring have two different versions of an allele?
In other cases, each parent provides a different allele of a given gene, and the offspring is referred to as heterozygous (“hetero” meaning “different”) for that allele.
What is it called when someone has two different alleles for a trait?
An organism which has two different alleles of the gene is called heterozygous. Phenotypes (the expressed characteristics) associated with a certain allele can sometimes be dominant or recessive, but often they are neither.
What is a mismatched pair of alleles called?
If the paired alleles are the same, the organism’s genotype is said to be homozygous for that trait; if they are different, the organism’s genotype is heterozygous. …
What is it called when a gene has more than two different variants?
Multiple Allele Traits
The majority of human genes are thought to have more than two normal versions or alleles. Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type.
What does tt mean in geneticists?
When an organism has two of the same alleles for a specific gene, it is homozygous (homo means “same”) for that gene. An organism can be either homozygous dominant (TT) or homozygous recessive (tt). If an organism has two different alleles (Tt) for a certain gene, it is known as heterozygous (hetero means different).
What are the differences between genotypes and phenotypes?
The genotype is a set of genes in the DNA which are responsible for the unique trait or characteristics. Whereas the phenotype is the physical appearance or characteristic of the organism. Thus, we can find the human genetic code with the help of their genotype.