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What is an organism that has a dominant and a recessive copy of a gene?
dogs have a dominant and a recessive copy of a gene
What is an organism with one dominant and one recessive gene for a trait?
An organism with one dominant and one recessive gene for a trait is called a heterozygote. In this case, the dominant gene will be expressed in the organism's phenotype, while the recessive gene will not be expressed unless the organism inherits two copies of the recessive gene.
What is recessive gene and dominant 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.
The stronger of the two traits which show up in an organism is called a?
dominant trait. It is more likely to be expressed in the phenotype of an organism when it is inherited with a recessive trait.
In a heterozygous organism one gene shows itself while the other gene is?
In a heterozygous organism, one gene may be dominant while the other is recessive. The dominant gene expresses its trait, overshadowing the effect of the recessive gene, which does not manifest in the organism's phenotype. This relationship is a fundamental principle of Mendelian genetics, where the dominant allele can mask the presence of the recessive allele in a heterozygous pairing.
The weaker of two genes is called what?
The weaker of two genes is called the recessive gene. In the presence of a dominant gene, the recessive gene is not expressed in the organism's phenotype.
What do you call an organism with two dominant or two recessive gene's for a single trait?
Homozygous.
What is a genotype with one dominant and one recessive gene?
The genotype of a person with one dominate allele for a gene and one recessive would be expressed as Aa or Yy. You can use any letter you would like except one will be shown as a capital (dominate) and one as a lower case (recessive). This combination is heterozygous for that trait.
What gene is masked if it is paired with a dominant gene?
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.
What is organisms with 1 dominant and 1 recessive gene?
An organism with one dominant and one recessive gene for a particular trait is said to be heterozygous for that trait. The dominant gene will typically mask the expression of the recessive gene, resulting in the dominant phenotype being expressed. For example, if "A" represents a dominant allele and "a" represents a recessive allele, the heterozygous genotype "Aa" will display the trait associated with "A."
What does it mean to be a dominant gene?
Genes which take precedence over their opposite number - recessive genes. i.e. when the genetic make-up of an organism is being determined the dominant gene will out-rank any recessive gene and more often than not be the determinant one.
What it the easiest way to determine if an organism is heterozygous or homozygous for a particular gene if self fertalization is not possible?
The easiest way to determine if an organism is heterozygous or homozygous for a particular gene, when self-fertilization is not possible, is through a test cross. This involves crossing the organism with a known homozygous recessive individual for the gene in question. If any offspring display the dominant phenotype, the organism is heterozygous; if all offspring show the dominant phenotype, then the organism is homozygous dominant. This method allows for clear observation of the genetic makeup based on the phenotypic ratios of the offspring.
