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No, not exactly. They are different forms of the same gene.
homozygous
Every gene has a dominant and recessive allele, homozygous is just when a gene has either two dominant alleles or two recessive alleles.
3.4 billion
i think what it is having two identical alleles for a particular gene
A cell can be described as being homozygous for a particular gene when there are identical genes on a pair of chromosomes (humans have 23 pairs). Under these conditions, we would see the expression of the gene under the homozygous condition. If the cell had a heterozygous condition, then there would not be identical genes found in the chromosome pair.
homozygous
No, because identical twins which share identical genes have distinct fingerprints.
No, not exactly. They are different forms of the same gene.
homozygous
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.
cells
There will be two pairs. It is possible for all four angles to be identical.
Homologous pairs
incomplete dominance
Every gene has a dominant and recessive allele, homozygous is just when a gene has either two dominant alleles or two recessive alleles.
It is more than likely you do have the gene. Only if you are an identical twin.