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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.
What else can I help you with?
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.
What group or family is praseodymium in?
Praseodymium is available in small quantities in the earth's crust and belongs to the category of rare earth minerals. This element can be found as mixture with other elements in monazite and bastnasite and can be extracted using the process called ion exchange or by counter-current solvent extraction Or... it's family is the Rare Earth Minerals Lots Of Love Hjaw123 xx
Is argon rare or common?
Argon is rare.
Is gold common or rare?
gold is 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.
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.
Why are recessive phenotypes so rare?
Recessive phenotypes are rare because they require two copies of the recessive allele to be expressed, which means both parents must carry the allele for the phenotype to be observed in offspring. If the allele is rare in the population, the likelihood of two carriers mating is low. Additionally, dominant alleles often overshadow recessive ones, leading to greater expression of dominant traits. As a result, recessive traits persist at lower frequencies in the gene pool.
What effect does a bottleneck have on the allele frequency of a population?
A bottleneck can lead to a significant reduction in the genetic diversity of a population, causing certain alleles to be lost and others to become more common. This can increase the frequency of rare alleles and result in genetic drift, potentially leading to an increase in genetic diseases or reduced fitness in the population.
Is a case of genetic drift in which rare alleles or combinations of alleles occur in higher frequencies in a population isolated from the general population?
Yes, this phenomenon is known as the "founder effect," a type of genetic drift. It occurs when a small group of individuals becomes isolated from a larger population, leading to a limited gene pool. Rare alleles or combinations of alleles can become more common in the new population due to the reduced genetic diversity and the random nature of allele frequency changes over generations. This can significantly impact the genetic structure of the isolated population.
Tay-Sachs disease which is caused by a recessive allele in the homozygous condition is extremely rare in the US population as a whole It is almost unknown in black Americans but is relatively common?
Tay-Sachs disease is a genetic disorder caused by a recessive allele, leading to severe neurological decline and early death. It is particularly common among individuals of Ashkenazi Jewish descent, where the carrier rate is significantly higher. In contrast, the disease is rare in the general U.S. population and virtually absent in Black Americans, reflecting the varying prevalence of the recessive allele across different ethnic groups. This highlights the importance of genetic screening and understanding population-specific risks in genetic disorders.
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.
Dominance has no direct relationship to prevalence True or False.?
True. Dominance refers to the genetic influence of one allele over another in determining a trait, while prevalence refers to how common a trait or condition is within a population. A dominant allele can be rare and still express a trait in individuals, whereas a prevalent trait can be caused by recessive alleles that are common in the population. Thus, dominance and prevalence are distinct concepts that do not directly correlate.
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.
