The alleles that make up the genes of an organism, known collectively as a genotype, exist in pairs that are identical, known as homozygous, or mismatched, known as heterozygous. When one of the alleles of a heterozygous pair masks the presence of another, recessive allele, it is known as a dominant allele.
Moreover, what is a gene that is expressed only in the homozygous state?
The gene or genes for diabetes are incompletely penetrant. dominant allele. an allele that masks the presence of a recessive allele in the phenotype. Dominant alleles for a trait are usually expressed if an individual is homozygous dominant or heterozygous. DNA (deoxyribonucleic acid )
What is an organism genetic makeup or allele combinations?
Genetics Vocabulary Quiz
|phenotype||An organism's physical appearance, or visible traits|
|genotype||An organism's genetic makeup, or allele combinations|
|heterozygous||Describes an organism that has two different alleles for a trait|
|homozygous||Describes an organism with two identical alleles for a trait|