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Single genes with two alleles refer to genetic loci that have two distinct forms (alleles) of a gene, typically represented as dominant and recessive. For example, in humans, the gene for blood type ABO has three alleles (A, B, and O), but a simpler example is the gene for pea plant flower color, which can have a purple allele (dominant) and a white allele (recessive). Individuals inherit one allele from each parent, resulting in three possible genotypes: homozygous dominant, homozygous recessive, and heterozygous. These genetic combinations influence phenotypic traits expressed in the organism.
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The two or more related genes that control a trait are known as?
alleles
What does a genes have two or more of?
Genes can have two or more alleles, which are different versions of a gene that can exist at a specific locus on a chromosome. These alleles can contribute to variations in traits among individuals. In diploid organisms, such as humans, genes typically have two alleles, one inherited from each parent. The combination of these alleles can determine the expression of specific traits.
When the alleles present for a trait are the same. the genes are called?
When the alleles present for a trait are the same, the genes are called homozygous. This means that both alleles for a particular gene are identical. Homozygous individuals can have either two dominant alleles (homozygous dominant) or two recessive alleles (homozygous recessive).
Do alleles consist of Many genes?
No, alleles do not consist of many genes. An allele is a specific variant of a gene that occupies the same position on a chromosome as another variant of that gene. While a gene can have multiple alleles, each allele represents a single version of that gene, rather than a collection of multiple genes.
What is the difference between alleles and multiple alleles?
Alleles refer to different versions of the same gene. So a single gene can have multiple alleles. For example in fruit flies there is a single gene that controls eye color, and the eye color of the fly depends on the alleles they have for that gene (since they have two copies of every gene, being diploid). A polygenic trait refers to any inheritable trait that is controlled by multiple genes, and each of these genes can have multiple alleles. For example, eye color in humans is a polygenic trait. There are at least three different genes, each with multiple alleles, that determine eye color in humans. Polygenic traits don't follow patterns of mendelian inheritance. So in summation the difference is multiple alleles refers to different versions of one gene and polygenic traits refers to a single trait which is controlled by multiple genes (each with multiple alleles) Yes, or: Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by multiple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
What three ways are human traits controlled?
Human traits are controlled by a combination of genetic factors (inherited from parents), environmental factors (such as diet and lifestyle), and epigenetic factors (changes in gene expression without changes in the underlying DNA sequence). These factors interact in complex ways to influence the development and expression of human traits.
What organisms with two alleles are called?
Genes
The two or more related genes that control a trait are known as?
alleles
Two ways multiple alleles and polygenic traits differ?
Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by multiple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
What does a genes have two or more of?
Genes can have two or more alleles, which are different versions of a gene that can exist at a specific locus on a chromosome. These alleles can contribute to variations in traits among individuals. In diploid organisms, such as humans, genes typically have two alleles, one inherited from each parent. The combination of these alleles can determine the expression of specific traits.
How are multiple alleles different from polygenic traits?
Multiple alleles are genes that have more than two alleles. An example of this would be blood types, with ABO as three separate alleles.Polygenic traits are traits whose phenotype rely on alleles from different genes. An example of this would be hair type, which relies on genes from different parts of chromosomes.The main difference is that multiple alleles are genes with 3 or more alleles; polygenic traits do not necessarily have more alleles, but they rely on on multiple genes.
What are genes with three or more alleles called?
this makes no scientific sense. A gene (which determines a phenotypic trait) can only contain 2 alleles. However codominace allows for multiple alleles to be chosen from, but only 2 picked for a gene. Also, if multiple genes determine a phenotypic trait that's polygenic inheritance.
What has two like genes or alleles?
Diploid organisms, like humans, have two alternate like alleles for every gene.
Traits are determined by pairs of genes called?
The two chromosomes (two "X" shapes) that are in a pair are generally called "homologous chromosomes". A pair of "chromatids" make up the two arms of a single chromosome.
When the alleles present for a trait are the same. the genes are called?
When the alleles present for a trait are the same, the genes are called homozygous. This means that both alleles for a particular gene are identical. Homozygous individuals can have either two dominant alleles (homozygous dominant) or two recessive alleles (homozygous recessive).
What is one difference between a single gene trait and a polygenic trait?
Multiple alleles are "the existence of more than two alleles (versions of the gene) for a genetic traits. Polygenic traits are "[characteristics of organisms that are] influenced by several genes." So multiple alleles are more than two alleles for one trait, and polygenic traits are one trait that is influenced by mulitple genes. This information came from my biology textbook, "Biology: Principles and Explorations" by Holt, Rinehart, and Winston.
Do alleles consist of Many genes?
No, alleles do not consist of many genes. An allele is a specific variant of a gene that occupies the same position on a chromosome as another variant of that gene. While a gene can have multiple alleles, each allele represents a single version of that gene, rather than a collection of multiple genes.
