What is homozygous dominant?
Homozygous dominant is the term used in genetics to describe the genotype of the organism. Genotype is a combination of genes that cause a phenotype, which is how the body looks or works. There are three different types of genotypes that are homozygous dominant, homozygous recessive and heterozygous. Copy of a gene or alleles are found in the same place on a pair of chromosomes. One copy comes from a male parent and one comes from a parent woman. Alleles determine the same characteristics - for example hair color or eye color - but can cause different results. Different combinations of these alleles are the way the genotype is determined. If two different forms of Genuffspring are handed over from their parents, one is usually expressed above the other. The gene that is expressed and controlled by the characteristics is said to be dominant to a gene that is not expressed, which is said to be recessive. In some cases, the middle characteristics may exist if the body has a dominant allele and a recessive allele.
Homozygous and heterozygous terms describe whether the forms of the gene are the same or differ. Homozygous means that the body contains two genes that are the same because "homo" is Greek for "the same". Heterozygous means that the body has two different forms of the gene. "Hetero" is Greek for "other" or "other".
As such homozygous dominant means that the organism has two dominant alleles for this particular genetic property. If the organism is homozygous recessive, then it has two recessive alleles. When the homozygous organism is reproduced, they could pass one form of the allele to any offspring because it contains only one form.
As an example is the dominant color of the brown eye above the blue color of the eyes. If a person is homozygous dominant for eye color, he will have brown eyes. If a person is homozygous recessive, he will have blue eyes. Finally, someone who is heterozygous will have brown eyes. IsI have a way to find out whether a person is homozygous dominant or heterozygous for brown eyes is to look at any offspring that are made.
Homozygous dominant parent will always have children with brown eyes no matter what color of the person's eyes of that person. This is due to the fact that the homozygous dominant parent has only a dominant gene that will always be expressed no matter what gene is provided by the second partner. A heterozygous parent can have brown and blue eye children, because this person has one copy of colored eye alleles and one copy of the colored allele. In this case, the eye of the other parent's eyes plays a role in determining the color of the eyes of any offspring and the chances of brown and blue eyes will vary depending on the genotypes of both parents.