dogs have a dominant and a recessive copy of a gene
A dominant gene is always expressed if present, and the recessive gene is only expressed with the homozygous recessive genotype. For example, if the dominant gene is red (represented by the letter R) and the recessive gene is white (represented by the letter r), then a homozygous dominant organism's genotype will be RR, and its phenotype will be red. If the organism is homozygous recessive, then the genotype will be rr and the phenotype will be white. If the organism is heterozygous, then the genotype will be Rr, and the organism will be red.
A recessive gene is one that does not show outwardly unless the organism has two copies of it. If you have only one copy of a recessive gene, your appearance is that of the dominant gene. Here are some sentences.Red hair is caused by a recessive gene.The baby had two recessive genes for Tay-Sachs disease, and did not live.You cannot tell if someone has a recessive gene just by looking at them.
The different forms of a gene are called alleles. In Mendelian genetics, a gene has a dominant allele and a recessive allele. The dominant allele masks the recessive allele if present. So there are two possible dominant genotypes: homozygous dominant, in which both dominant alleles are present; and heterozygous, in which one allele is dominant and the other allele is recessive. The only way to express a recessive trait is to have the homozygous recessive genotype.
Is called a dominant gene, the opposite is a recessive gene.
A gene or allele may take a dominant form, or a recessive form. If the allele is recessive, the characteristic which is coded for will be exhibited only if both the gene from the male and the gene from the female is recessive. Only one copy of a dominant allele is required to cause expression of the dominant characteristic
Homozygous.
if u have a recessive gene with a recessive gene then u can see the recessive gene but if you have a dominant gene with a recessive gene you can only see the dominant gene hope that helps:)
Most genes have two copies of each gene with dominant gene "trumping" the recessive one. The gene is recessive because it is said not to do much of anything unless paired with another recessive gene, but if paired with a dominant gene, the dominant gene wins.
Phenotype is what traits are expressed by the organism. So what ever is the dominant Genotype of the organism will determine the Phenotype. For example a dominant R gene will be the Phenotype in RR and Rr. However, if the organism has two recessive rr then the recessive gene will determine the Phenotype.
that organism is a heterozygous one which contain the traits of recessive as well as dominant genes.
The dominant trait is shown in that organism with the possibility of carrying either the dominant or recessive gene to the next generation
The name of the gene pair that consists of a dominant and recessive allele, i.e. (Xx) will be a heterozygous allele. In this situation, the characteristics of the dominant characteristic will mask that of the recessive allele. People have have a heterozygous genotype may be carriers for diseases that reside on the recessive allele.