The term allele is often used interchangeably with the word gene. Allele/gene is used for the variations seen at each gene locus for a trait on the homologous chromosome pair. For example:
If there are three alleles for a trait only two of the alleles will be represented in the genotype of any
one individual. The alleles for basic blood types A, B and O are examples.
In general the term allele is not used interchangeably with gene in conjunction with the terms locus or loci..therefore Gene locus or gene loci but not allele locus or allele loci.
An allele that's masked by a dominant gene is called a "Recessive"recessiverecessive traitThe recessive allele. Often depicted as the "small r" in examples: Rr, R=dominant, r= recessive.
allele
It is pronounced a lee el
I like alleles.
Allele is word used by Mendel for counter parts of an elementon later called factor and renamed as gene e.g. T and t are alleles for a gene that controls height in pea plant .Nasty allele is not biological term .Note word elementon is technical term used by Mendel , it is not element used in Chemistry .
In cases of complete dominance, one allele, known as the dominant allele, masks the expression of the other allele, known as the recessive allele, in the heterozygous state. This results in only the dominant allele being expressed in the phenotype.
An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).
a dominant allele will express its trait , as well as be carried by the person. the word carrier is commonly used for a person who bears an allele which does not express itself(i.e. a recessive gene).
Examples of dominant genes include brown eyes and attached earlobes, where the dominant allele will be expressed over its recessive counterpart. Recessive genes include blue eyes and detached earlobes, which will only be expressed when an individual has two copies of the recessive allele.
In genetics, "dominant" refers to an allele that will be expressed in the phenotype if present, masking the expression of the corresponding recessive allele. This means that even if an individual has one dominant allele and one recessive allele for a particular trait, the dominant allele's phenotype will be visible.
Here are a couple of examples of Hardy-Weinberg equilibrium practice problems: In a population of 500 individuals, 25 exhibit the recessive trait for a certain gene. What is the frequency of the dominant allele in the population? Answer: Let p be the frequency of the dominant allele and q be the frequency of the recessive allele. Since q2 0.25, q 0.5. Therefore, p 1 - q 1 - 0.5 0.5. The frequency of the dominant allele is 0.5. In a population of 1000 individuals, 64 exhibit the dominant trait for a certain gene. What is the frequency of the recessive allele in the population? Answer: Let p be the frequency of the dominant allele and q be the frequency of the recessive allele. Since p2 0.64, p 0.64 0.8. Therefore, q 1 - p 1 - 0.8 0.2. The frequency of the recessive allele is 0.2.
A dominant allele