what is a dominant trait
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- Dominant trait. Definition. noun. (genetics) An inherited trait that results from the expression of the dominant allele over the recessive allele. Supplement. The inheritance of one or two copies of the dominant alleles results in the expression of a dominant trait.Also called: 1  dominant character.ominant trait. Definition. noun. (genetics) An inherited trait that results from the expression of the dominant allele over the recessive allele. Supplement. The inheritance of one or two copies of the dominant alleles results in the expression of a dominant trait. Also called:
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- Simple dominance occurs when two alleles of a single gene, the dominant version and the recessive version, code for a heritable trait. The presence of the dominant allele masks the presence of the recessive allele.ne human trait that's expressed through simple dominance is the ability to taste the bitter chemical PTC, which is expressed by a single gene that codes for a taste receptor on the tongue.
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Dominant Trait: Definition & Example Before we can define exactly what a dominant trait is, we must first define and discuss many genetics terms. A gene, or unit of heredity, can have many different versions called alleles.There are often two kinds of alleles: 1  Dominant allele: masks the effects of another allele; designated by an uppercase letter. recessive trait is the phenotype that is not seen in the heterozygous genotype, and attached earlobes are a recessive trait. This brings us back to our main topic, which we can now define. A dominant trait is the phenotype that is seen when the heterozygous genotype is present.
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dominant trait Dominant trait. A genetic trait in which one copy of the gene is sufficient to yield an outward display of the trait; dominant genes mask the presence of recessive genes; dominant traits can be inherited from a single parent.Mentioned in: Cutis Laxa, Polydactyly and Syndactyly, Pseudoxanthoma Elasticum.n inherited characteristic that is determined by a dominant allele. Polydactyly is an example of a dominant trait; individuals with either one or two copies of the polydactyly allele have extra fingers or toes. (dom'i-nănt trāt).
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- Dominant and recessive traits. Using genetic principles, the information presented in a pedigree can be analyzed to determine whether a given physical trait is inherited or not and what the pattern of inheritance is. In simple terms, traits can be either dominant or recessive. A dominant trait is passed on to a son or daughter from only one parent.
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- Dominant: A genetic trait is considered dominant if it is expressed in a person who has only one copy of that gene.(In genetic terms, a dominant trait is one that is phenotypically expressed in heterozygotes).A dominant trait is opposed to a recessive trait which is expressed only when two copies of the gene are present. (In genetic terms, a recessive trait is one that is phenotypically expressed only in homozygotes).Examples of dominant disorders include: 1  Achondroplasia (a common form of dwarfism with short arms and legs),ominant: A genetic trait is considered dominant if it is expressed in a person who has only one copy of that gene.
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- Definition. Autosomal dominant is one of several ways that a trait or disorder can be passed down (inherited) through families. In an autosomal dominant disease, if you inherit the abnormal gene from only one parent, you can get the disease. Often, one of the parents may also have the disease.
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Autosomal dominant Autosomal dominant is one of several ways that a trait or disorder can be passed down (inherited) through families. In an autosomal dominant disease, if you inherit the abnormal gene from only one parent, you can get the disease. Often, one of the parents may also have the disease. Inheriting a disease, condition, or trait depends on the type of chromosome affected (autosomal or sex chromosome). It also depends on whether the trait is dominant or recessive. A single abnormal gene on one of the first 22 nonsex (autosomal) chromosomes from either parent can cause an autosomal disorder. Dominant inheritance means an abnormal gene from one parent can cause disease, even though the matching gene from the other parent is normal.
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Dominance (genetics) Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.Often the dominant allele codes for a functional protein whereas the recessive allele does not. A classic example of dominance is the inheritance of seed shape, for example a pea shape in peas.ominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.
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- A dominant allele is an allele where its phenotype will always be represented when the allele for that gene is present. A recessive allele can be masked by a dominant allele w … hen a dominant and recessive allele are present for the same gene.A recessive allele will only present itself when two recessive alleles for a trait are present. + 53 others found this useful.f the two dominant alleles are different, it is called  co-dominance. Another name for two dominant alleles that are  different is Incomplete dominance.
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Dominant allele Dominant allele: an allele that has the same effect on the phenotype whether it is present in the homozygous or heterozygous state. Recessive allele: an allele that only has an effect on the phenotype when present in the homozygous state.dominant allele. In a heterozygote, the allele that is fully express ed in the phenotype.dormancy ... Dominant allele: An allele that masks an alternative allele when both are present (in heterozygous form) in an organ ism (see recessive).Most common autosomal dominant diseases are due to mutation s in transcription factor genes (Jimenez-Sanchez, 2001).ecessive allele: an allele that only has an effect on the phenotype when present in the homozygous state. dominant allele. In a heterozygote, the allele that is fully express ed in the phenotype.
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What is the difference between dominant and recessive alleles for specific traits? Making the world better, one answer at a time. Dominant is an allele that will always be expressed in a heterozygous individual. Recessive on other hand are traits that will only be expressed in a homozygous condition. Organisms receive one allele for each trait from each parent, thus you have two alleles for each trait.
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- A dominant trait is the trait that will show. A recessive trait is the trait that is hidden. For example if your mom had brown eyes and your dad has green eyes you would have … brown eyes because brown eyes are the dominant trait.3 people found this useful.his allele, often called the recessive … allele is usually represented by the lowercase form of the letter used for the corresponding dominant trait. The genotype of an organism that is homozygous recessive for a particular trait is represented by a doubling of the appropriate letter, such as pp.
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What is dominant allele? A dominant allele is an allele that can take over a recessive allele, so if you have a dominant allele and a recessive allele, then the offspring will most likely have a domi … nant allele over a recessive allele. The dominant allele is expressed over the recessive allele.f the two dominant alleles are different, it is called  co-dominance. Another name for two dominant alleles that are  different is Incomplete dominance.
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What is the definition of a dominant trait in biology? When binary traits are available, they become classified as Dominant or recessive. A dominant trait is a trait the is evident by the appearance of the organism. A recessive trait is a trait the is present but is not evident in the appearance of the organism. Dark hair is a dominant trait to a recessive light hair trait. Two brunettes may have a chance of having a blonde child due to the fact that either of them may carry the blonde haired gene and not show it.
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dominant The definition of dominant is a person who is in a position of power or who is exhibiting powerful or controlling tendencies. An example of dominant is a strong and powerful CEO. Dominant refers to a gene that will present itself by producing a characteristic that can be inherited.
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- A dominant trait is a genetic trait which may cause a hereditary condition, a recessive trait disappears or goes in the background and only shows in a few generations. 17 people found this useful. Edit. Share to: 1  Defining Agnostic What an agnostic is depends upon the individual holding the belief.
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- An autosomal dominant trait is one which manifests in the heterozygous state, i.e. in a person possessing both an abnormal or mutant allele and the normal allele. It is often possible to trace a dominantly inherited trait or disorder through many generations of a family (Fig.7.2).ew mutations In autosomal dominant disorders an affected person will usually have an affected parent. However, this is not always the case and it is not unusual for a trait to appear in an individual when there is no family history of the disorder.
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Autosomal dominant A single, abnormal gene on one of the first 22 nonsex chromosomes from either parent can cause an autosomal disorder. Dominant inheritance means an abnormal gene from one parent can cause disease, even though the matching gene from the other parent is normal. The abnormal gene dominates.utosomal dominant is one of several ways that a trait or disorder can be passed down through families. If a disease is autosomal dominant, it means you only need to get the abnormal gene from one parent in order for you to inherit the disease.
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autosomal-dominant inheritance autosomal-dominant inheritance, a pattern of inheritance in which the transmission of a dominant allele on an autosome causes a trait to be expressed. Males and females are usually affected with equal frequency.
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Dominant Trait: Definition & Example Definition of Dominant Trait Before we can define exactly what a dominant trait is, we must first define and discuss many genetics terms. A gene, or unit of heredity, can have many different versions called alleles.
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- The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.f AA and aa individuals (homozygotes) show different forms of some trait (phenotypes), and Aa individuals (heterozygotes) show the same phenotype as AA individuals, then allele A is said to dominate or be dominant to or show dominance to allele a, and a is said to be recessive to A.
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- A dominant trait is opposed to a recessive trait which is expressed only when two copies of the gene are present. (In genetic terms, a recessive trait is one that is phenotypically expressed only in homozygotes). Examples of dominant disorders include: 1  Achondroplasia (a common form of dwarfism with short arms and legs),
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autosomal-dominant inheritance autosomal-dominant inheritance, a pattern of inheritance in which the transmission of a dominant allele on an autosome causes a trait to be expressed. Males and females are usually affected with equal frequency. pattern of inheritance in which the transmission of a dominant allele on an autosome causes a trait to be expressed. Males and females are usually affected with equal frequency.
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Dominant Inheritance Dominant Inheritance. Dominant Inheritance. When a trait is dominant, only one allele is required for the trait to be observed. A dominant allele will mask a recessive allele, if present. A dominant allele is denoted by a capital letter (A versus a). Since each parent provides one allele, the possible combinations are: AA, Aa, and aa. Offspring whose genotype is either AA or Aa will have the dominant trait expressed phenotypically, while aa individuals express the recessive trait.
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dominant Relating to the form of a gene that expresses a trait, such as hair color, in an individual organism. The dominant form of a gene overpowers the counterpart, or recessive, form located on the other of a pair of chromosomes. Relating to the trait expressed by such a gene. See more at inheritance.