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The smaller the population the greater the frequency the allele will increase. When the Old Order Amish came to America in 1744 it was a husband and wife. One of them was a carrier for a recessive genetic mutation. As time went on and inbreeding occured because of the small population more and more children were born with the genetic disorder.
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A small founding population of a few hundred Europeans in North America had an unusually high frequency of an allele that causes polydactyly (six fingers). Many generations that followed had cases of?
The Founder Effect The founder effect is when a few individuals of a species form a new population. The gene pool composition, therefore, is not reflective of the gene pool of the original population. Think of this as a small number of people starting their own colony. This is an example of the Founder effect because Polydactyly is a dominant trait. And in a large population, it will be rare finding a person with a 6th digit. In a smaller population, however, polydactyly has a higher frequency of this allele, because the smaller the population, the higher the sensitivity for inbreeding and lower genetic variation. So, polydactyly (dominant allele) + Increase inbreeding= Higher polydactyly allele frequency.
What is vivianite used for?
There seems to be a possibility of there being little to no use of vivianite as many sources refer to the fact that the pieces of vivianite are small and that vivianite is a very rare resource.
Is argon rare or common?
Argon is rare.
Is gold common or rare?
gold is rare
Is coal rare?
Yes, it very rare
Defective alleles are eliminated rapidly from population if they are?
A defective allele is more likely to be eliminated from a population if it is dominant. This is because it is immediately exposed to the effects of selection, as only one copy of a dominant allele is needed for it's characteristic to be developed. If an allele is recessive it can survive in a population as it is 'hidden' from selection by the presence of the corresponding dominant allele. It will only beexposed to selectionif an individual inherits the recessive allele from both parents. If the recessive allele is rare, the chances of two individuals with the allele mating could be quite small. In this way a defective recesssive allele could survive at low levels in a population.
A small founding population of a few hundred Europeans in North America had an unusually high frequency of an allele that causes polydactyly (six fingers). Many generations that followed had cases of?
The Founder Effect The founder effect is when a few individuals of a species form a new population. The gene pool composition, therefore, is not reflective of the gene pool of the original population. Think of this as a small number of people starting their own colony. This is an example of the Founder effect because Polydactyly is a dominant trait. And in a large population, it will be rare finding a person with a 6th digit. In a smaller population, however, polydactyly has a higher frequency of this allele, because the smaller the population, the higher the sensitivity for inbreeding and lower genetic variation. So, polydactyly (dominant allele) + Increase inbreeding= Higher polydactyly allele frequency.
In A small founding population few hundred Europeans in North America had an unusually high frequency of an allele that causes polydactyly (six fingers). Many generations that followed had cases of?
The Founder Effect The founder effect is when a few individuals of a species form a new population. The gene pool composition, therefore, is not reflective of the gene pool of the original population. Think of this as a small number of people starting their own colony. This is an example of the Founder effect because Polydactyly is a dominant trait. And in a large population, it will be rare finding a person with a 6th digit. In a smaller population, however, polydactyly has a higher frequency of this allele, because the smaller the population, the higher the sensitivity for inbreeding and lower genetic variation. So, polydactyly (dominant allele) + Increase inbreeding= Higher polydactyly allele frequency.
A small founding population of a few hundred Europeans in North America had an unusually high frequency of an allele that causes polydactyly six fingers Many generations that followed had cases of?
The Founder Effect The founder effect is when a few individuals of a species form a new population. The gene pool composition, therefore, is not reflective of the gene pool of the original population. Think of this as a small number of people starting their own colony. This is an example of the Founder effect because Polydactyly is a dominant trait. And in a large population, it will be rare finding a person with a 6th digit. In a smaller population, however, polydactyly has a higher frequency of this allele, because the smaller the population, the higher the sensitivity for inbreeding and lower genetic variation. So, polydactyly (dominant allele) + Increase inbreeding= Higher polydactyly allele frequency.
What is the pedigree of a rare recessive phonotypr determined by a recessive allele?
this question makes no sense.
What is Rare Ltd.'s population?
The population of Rare Ltd. is 200.
Why are dominant genetic disorders rare in humans?
Intuitively, natural selection should eliminate these lethal genetic disorders from the population.....However, natural selection does not act on the genotype of an individual, but on the phenotype. Many of these lethal genetic disorders are the product of two "recessive alleles" that were masked in the parents with a "dominant allele."
Is there any evidence that the trait shared by most or the population is not controlled by a dominant allele?
There are many traits that are found in the majority of populations that are recessive alleles. Conversely, some rare conditions are the result of dominant alleles. Dominant alleles do not dominate the population because of independent assortment. An example of a recessive allele is O type blood. O typ blood is the most common blood type. There are four types of blood (because typing is co-dominant) A, B, AB, and O. If you have two A alleles or an A and O, you have A type, if you have two B alleles or a B and O, you have B blood type, if you have an A and a B, you have AB, if you have two O's, you have O type. Looking at that, you would think a minority of people would have O but O is the most common blood type in the US population (It is not true of all populations, however.) Conversely, some rare diseases are controlled by a dominant allele Huntingtons, for example is dominant but the allele is rare. Polydachtly (extra fingers) is dominant as well but has not taken over the population because there is no advantage (and hasn't been selected-for) and because of independent assortment.
Is the ivory woodpecker in a zoo?
This extremely rare bird is not found in captivity. Only a small population, if any, still exist in the wild.
How can evolution be defined and measured by the frequency of alleles in a gene pool?
It's not gene pools that have a frequency, but allelesthat have a frequency in the gene pool.Alleles are "rival" variants for the same gene. For instance, if hair colour is coded by one gene, then brown hair may be allele A for that gene, while blonde hair is allele B for the same gene.Imagine people as being packages of genes, each containing two full sets of genes (humans are diploid, so we contain two copies of genes in all our cells - but they may be two different alleles for the same gene). Now put the contents of all those people-packages together in one pool: that's your gene pool.The more people have some trait T, coded for by allele A of gene G, the higher the number of copies of allele A will be in the gene pool. That's what's called the allele frequency.
What happens when you take out something out of the food chain?
the smaller population on the food chain would increase and the big predators would decrease in population. it could probably go instinct or become very rare in that area.
What is the factor that seems to disappear due to a dominant allele?
An allele is one particular form of a gene. A large population of living things typically have several different allele for any particular gene. For example, one important gene in humans determines blood type compatibility. That gene comes in 3 different alleles -- A, B, and O. Most plants and animals are diploid -- they have 2 of each gene, one inherited from each parent. For example, any one human has one of six possible genotypes for that gene: AA, BB, OO, AB, AO, BO. A recessive allele seems to disappear when paired with a dominant allele. If something has a dominant and recessive allele, the dominant will overshadow the recessive, but the recessive will still be there (just not showing). For example, the O allele is recessive when paired with the A allele, which is dominant, and so humans with the AO genotype as well as the AA genotype have "type A blood". Only humans with the OO genotype show "type O blood". According to the Wikipedia "allele" article, some people once thought that all genes had only one "normal" allele, which was both common and dominant, and all other versions of that gene (all other alleles) were rare and recessive. However, most genes have many different "normal" alleles, whose frequencies vary from one population to another. With some genes, the most common allele is recessive.
