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Huntington's disease is a perfect example of a single gene trait. A mutation in this allele causes Huntington's disease in later life. A dominant trait. Widows peak us another. Any gene that controls the total expression of a trait is an allele defined as a single gene trait.
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A genotype consisting of two identical alleles of a gene for a particle trait?
A genotype consisting of two identical alleles of a gene for a particular trait is called homozygous. This means that both alleles are the same, which can either be dominant or recessive. Homozygous genotypes can result in the expression of a specific trait depending on the alleles involved.
A unit that determines that trait?
A genetic locus is the specific location on a chromosome where a particular gene is located. It serves as a unit that determines the expression of a specific trait due to the presence or absence of alleles at that locus.
What is a poly allelic trait?
A polyallelic trait is a trait controlled by multiple alleles (variants of a gene) at a single gene locus. This means there are more than two possible alleles that can influence the trait's expression, resulting in a range of phenotypic variations. This can lead to a complex inheritance pattern.
Organism that has two diffrent alleles for a single trait?
An organism that has two different alleles for a single trait is called heterozygous. This means that the organism inherited different versions of the gene responsible for that trait from each parent.
What is the physical expression of trait called?
Phenotype
WHAT is single gene trait?
A single gene trait is a specific characteristic or phenotype that is influenced by the expression of a single gene. This means that the presence or absence of a particular trait is determined by variations in one specific gene. Examples include earlobe attachment, hair color, and tongue rolling.
How do you distinguish genes and traits?
Genes are discrete segments along a DNA molecule that codes for a particular trait. A trait is an observable expression of a gene.
A genotype consisting of two identical alleles of a gene for a particle trait?
A genotype consisting of two identical alleles of a gene for a particular trait is called homozygous. This means that both alleles are the same, which can either be dominant or recessive. Homozygous genotypes can result in the expression of a specific trait depending on the alleles involved.
What kind of trait is present when many different genes control a single trait such as skin color?
Polygenic trait, where multiple genes contribute to the expression of a single trait like skin color. Each gene may have a small effect on the trait, and their combined influence results in a continuous range of variation.
The outward appearance of a particular trait is called?
The outward expression of genetic traits are called phenotypes. Phenotypes expression include recessive and dominant genes such as eye and hair color.
What is the significance of genotypes where the alleles are the same in genetic inheritance?
When genotypes have the same alleles in genetic inheritance, it means that the individual is homozygous for that particular trait. This can have significance in determining the expression of that trait in the individual.
A unit that determines that trait?
A genetic locus is the specific location on a chromosome where a particular gene is located. It serves as a unit that determines the expression of a specific trait due to the presence or absence of alleles at that locus.
What is a poly allelic trait?
A polyallelic trait is a trait controlled by multiple alleles (variants of a gene) at a single gene locus. This means there are more than two possible alleles that can influence the trait's expression, resulting in a range of phenotypic variations. This can lead to a complex inheritance pattern.
What is meant by homozygenous?
Homogeneous refers to a uniform composition or structure. In genetics, it can mean having the same alleles at a particular gene locus on both homologous chromosomes. This can result in the expression of a specific trait, such as having two copies of the same allele for a certain gene.
Two plants are crossed resulting in offspring with a 3 to1 ratio for a particular trait This suggests?
The 3:1 ratio for a particular trait suggests that the trait is determined by a single gene with two alleles. It indicates that one parent is homozygous dominant for the trait, one parent is homozygous recessive, and the offspring are heterozygous.
What is polygeny?
Inheritance in which more than one gene pair affects the appearance of a particular trait. Polygenetic inheritance refers to the non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes.
An allele is one of the alternative forms of a gene that governs a trait If a fern plant is heterozygous for a particular trait how can the alleles that control that trait be described?
If a fern plant is heterozygous for a particular trait, it means it carries two different alleles for that trait. The alleles can be described as one dominant allele and one recessive allele. The dominant allele will typically determine the physical expression of the trait, while the recessive allele will not be visibly expressed in the plant.
