When a single gene has multiple phenotypic effects that is called?
The term pleiotropy is derived from the Greek words pleio, which means "many," and tropic, which means "affecting." Genes that affect multiple, apparently unrelated, phenotypes are thus called pleiotropic genes (Figure 1).
What is it called when multiple genes determine a phenotype?
Polygenic Trait A polygenic trait is a characteristic, such as height or skin color, that is influenced by two or more genes.
What is the difference between pleiotropy and epistasis?
The basic difference between epistasis and pleiotropy is that epistasis is the phenomenon in which a gene at one site changes the phenotypic expression of a gene at another location whereas pleiotropy explains the phenomenon in which a single gene affects several phenotypic traits.
What pleiotropy means?
Pleiotropy means that a single gene affects two or more characters. In the context of life history evolution, pleiotropy means that a single gene affects the fitness of the organism at two or more ages. It is convenient to categorize the combinations of age-specific pleiotropic effects as shown in Table 1.
What is it called when a single gene controls multiple traits?
Pleiotropy is the condition in which a single gene influences more than one trait.
What is pleiotropy effect?
Pleiotropy is a phenomenon increasingly recognized by the usage of hypothesis-free exome sequencing rather than candidate gene approaches to identify novel disease genes. It refers to the effect that mutations in one and the same gene may lead to multiple, seemingly unrelated diseases.
What is the difference between polygenic and pleiotropy?
Some people confuse pleiotropy and polygenic inheritance. The major difference between the two is that pleiotropy is when one gene affects multiple characteristics (e.g. Marfan syndrome) and polygenic inheritance is when one trait is controlled by multiple genes (e.g. skin pigmentation).
What is the difference between polygenic inheritance and epistasis?
A gene that employs a minor effect on a phenotype along with other genes is referred to as polygenes. Numerous genes exert an equal effect. The expression of one gene is not masked by the presence of the other genes, i.e., epistasis is not involved.
Which of the following will produce multiple phenotypic effect?
So, the correct answer is 'pleiotropy'.
What is pleiotropy and epistasis?
Pleiotropy, in which one mutation causes multiple phenotypes, has traditionally been seen as a deviation from the conventional observation in which one gene affects one phenotype. Epistasis, or gene-gene interaction, has also been treated as an exception to the Mendelian one gene-one phenotype paradigm.
When a single gene has multiple downstream effects what is it called?
a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores. When a single gene has multiple downstream effects it is called ______________. Pleiotropy.
What’s the difference between epistasis and pleiotropy?
The basic difference between epistasis and pleiotropy is that epistasis is the phenomenon in which a gene at one site changes the phenotypic expression of a gene at another location whereas pleiotropy explains the phenomenon in which a single gene affects several phenotypic traits.
Which one of the following is an example of gene with multiple phenotypic effect?
The gene having the ability to control expression of a number of characters and have multiple phenotypic effects is called pleiotropic gene. For example- in Drosophila, the gene for wing size also affects the nature of balancers, eye color, fertility, longevity, etc.
What is the difference between epistasis and polygenic traits?
A polygenic trait is a phenotypic trait for which the variance in the population is explained by two or more loci. Epistasis is a case there is a statistical interaction between several loci on the value of a phenotypic trait.