What is the condition in which the dominant allele is unable to express itself fully?
Co-dominance or incomplete/semi-dominance.
Co-dominance is a mix between the two traits, for example (simplified), in roses, white crossed with red make pink. This makes 3 distinct variations.
Semi-dominance is a little more complicated as multiple variations may occur but they can all closely resemble eachother, but with minor variences. Generally, a heterozygous trait will have traits similar to the two different types of homozygous trait (i.e. (simplified) AA, Aa, and aA will all look slightly different, but AA contains traits of both Aa and aA). For example, tonkinese cats, show various semi-dominant types.
A dominant allele can express itself in both homozygous or heterozygous conditions in the subsequent generations.
A dominant allele expresses itself in every offspring in every generation. A dominant allele expresses itself irrespective of the other allele present along with it. A recessive allele, however is masked by the presence of dominant allele. It can express itself only if the other gene in the allele pair is also recessive. As a result, it is not expressed phenotypically in every generation.
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).
A dominant allele will express itself if present, and will suppress the recessive allele's expression.
An allele that can express itself (produce its phenotype) even in the presence of the other allele is said to be dominant to the other allele. The allele that cannot express itself when its dominant allele is present is called the recessive allele. For example, gene T governs height in pea plants. The "T" allele produced tall plants, while the "t" allele produces dwarf plants. Plants having genotypes TT and tt would no doubt be… Read More
Condition asked in question is callled heterozygous and only a dominant allele epresses itself in such condition .
Is called dominant allele .
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 when 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.
A dominant allele is the allele which expresses itself morphologically.for example;the dimple on your cheek.your mom has a dimple whereas your father doesn't have it .but you too possess it.then ,your mother's allele serves to be the dominant allele.
Hemophilia is a recessive allele condition. Men can get hemophilia alot easier than women as the allele is found on the XY Chomosome pair. With men. they do not have the extra "tail" on the Y chromosome compared to the XX with a female. If the person has the recessive allele on the X chromosome and this person is male, they will be a hemophiliac as they do not have a 'pair' allele which could… Read More
Its either one of the following: a. recessive allele b. independent assortment c. allele pair d. dominant allele
a dominent allele, is a version of a gene that does not need to be present twice to express itself.
In both the traits only the dominant alleles phenotype will make an appearance. When a dominant and a recessive allele occurs, then the dominant allele rules over the recessive allele and the dominant trait is manifested. This combination of a dominant and a recessive allele causes the formation of a heterozygous genotype. A recessive trait manifests itself only when both the alleles are recessive causing the occurrence of a recessive homozygous genotype. (A homozygous genotype… Read More
Dominance is a form of inheritance in which only one allele of a gene expresses itself in a heterozygous condition whereas incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely dominant over the other allele. This results in a combined phenotype.
Such a trait is called a recessive trait.
How do dominant lethal alleles persist in populations even though their fitness is essentially zero?
Huntington's disease, where the lethal allele expresses itself very late in an individuals life. Persons carrying the dominant lethal allele does not become aware of the disease until after their reproductive age. Thus, they pass the lethal allele to their children without knowing and the allele persists.
A carrier is one who has an allele that can only express itself when it is paired up with an identical allele. For instance, let says there's a woman homozygous dominant for brown eyes (BB) and she mates with someone that has blue eyes (bb). Now, lets say they make a child that is heterozygous (Bb) and the child has brown eyes. Although that child has brown eyes, they aren't dominant homozygous for brown eyes… Read More
this is a dominant gene
What gene that does not express itself and is concealed by the presence of another gene of the same trait?
If you are talking about alleles, then this would be a recessive allele.
A dominant gene or variant, refers to gene alleles ("variants") that "beat" other (recessive) genes. Meaning that if an individual has both a dominant and a recessive allele for a certain trait, the dominant allele will express itself "over" the recessive one, affecting the phenotype accordingly. A common example, while being a simplification of the actual complexities of the matter, is hair color. Brown hair is dominant over blond hair. A person with blond hair… Read More
There is no such thing as heterozygous dominant or recessive. Heterozygosity is the combination of a dominant and a recessive allele. There is something called autosomal (or X-lined) dominance or recessive, which defines which allele expresses itself when an individual is heterozygous for a particular locus. For example, if Aa individual "looks like" AA individual, then the locus is autosomal dominant. If Aa "looks like" aa individual, then the locus is autosomal recessive.
In simple Mendelian genetics, there may be several alleles (variations) for a given trait. since organisms generally have two pairs of chromosomes, they have two alleles. A dominant allele is one that when it is present, always shows itself. A recessive allele only shows when there are two copies of the recessive allele. For example, suppose brown hair is dominant and black hair is recessive. If there are any copies of the brown hair allele… Read More
Allele is itself biological term .
Heterozygous means an individual that has two different versions of a gene. Scientists call these different versions of genes alleles. Recessive means that the effect of one allele is hidden by another allele called the dominant allele. Because recessive alleles are hidden by dominant alleles, the only way for a recessive allele to show itself in the traits (aka phenotype) of an individual is if the individual only has the recessive version of the alleles… Read More
i think it is dominant Actually it is a X-linked dominant disorder of course it is dominant due to the fart status I agree with the above responder This is what I learned when I had a kid in my class that had this after I did research on it Fragile X syndrome carriers include both mothers and fathers Fathers X Y can only pass this condition to their daughters Mothers X X have a… Read More
no alleles are what make up a gene
The mutated gene in homozygous recessive condition can express itself and an off type mutated plant can very easily recognized in the population.
NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition...
Based on your history, you are probably talking about colorblindness, which is a disease inherited on the X chromosome. When it is passed on to a boy, the recessive allele shows itself because boys only have one X chromosome. Edited answer: Though recessive alleles do not express but if it adds to a deficiecy it is reflected in the boy, because only one X chromosome in present there, the other being Y chomosome which is… Read More
This is an attribute that is most likely to show itself. You may have the recessive attribute, but the dominant one takes over.
It's not sickle-cell itself, but rather being a heterozygous carrier of the disease. People with one dominant and one recessive allele for the disease are immune to malaria without the crippling effects of having sickle-cell anemia. I don't think that it can even represent codominance, though.
Then you will have two copies of the same gene, a condition known as having identical alleles. If the particular gene is recessive (such as for blue eyes) this is the only way it will be able to express itself.
NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition.. Read more: http://wiki.answers.com/Q/Is_it_possible_to_determine_the_genotype_of_a_person_showing_a_dominant_phenotype#ixzz1ysMfuVmW
A dominant gene expresses itself over a recessive gene.
No. Black is dominant, and a dominant trait always shows itself when it is present
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There's not exactly a clear-cut way to answer this. If someone is homozygous dominant, that means they have two dominant genes, AA for example, and, of course, the dominant phenotype (phenotype just means the physical expression of a trait/gene) will be expressed. If someone is homozygous recessive, meaning they have two recessive genes, aa, they would then express the recessive gene. Now, in cases of complete dominance and a person with a heterozygous genotype (Aa)… Read More
a "dominant trait."
A phenotype is the trait that actually gets expressed in an organism. organisms inherit a genotype from their parents: they get versions of the gene from both their mother and their father, and only one of those versions of the gene will actually express itself. which gene expresses itself is determined by the dominance of the the two genes - which ever trait is more dominant is more likely to be expressed - and by… Read More
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A dominant trait will show whenever it is present.
The gene that expresses itself over the other is Dominant. The former gene is recessive.
Mendel's Law of Segregation is when a sperm and egg unite at fertilization, each contributing its allele, thus restoring the paired condition in the offspring. Mendel also discovered that each pair of alleles segregates itself of the other pairs of alleles during gamete formation. This separation occurs during Anaphase I.
Is called a dominant gene, the opposite is a recessive gene.
If the WORKING condition is Excellent. What condition is the pistol itself in. Is it also in Excellent condition or average condition