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In a certain population the dominant phenotype of a certain trait occurs 91 of the time what is the frequency of the dominant allele?
Wiki User
∙ 12y ago
p^2+2pq=.91-->q^2=.09-->q=.3-->p=.7-->p^2=.49
p^2+2pq+q^2=1.49+2pq+.09=12pq=.42
the number of AA alleles =140-->49*2 + 42*1=140the number of AA alleles=60-->42*1 + 9*2=60
So the frequency of the dominant allele is equal to the number of dominant alleles over the total number of alleles.Therefore 140/200=.7.7 is frequency of the dominant allele
Wiki User
∙ 12y ago
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What is phenotype frequency?
A ratio of individuals with a particular phenotype to the total number of individuals in the population. Individuals with certain phenotype --------------------------------------------------- (Over) Total # of individuals within the population The distribution of traits in a population
In a population that is not undergoing natural selection for a certain trait what does the phenotype distribution look like?
The distribution will center towards hetrotrophs and thus dominant phenotypes. The distribution approaches all dominant phenotypes
Pattern of inheritance in which both alleles contribute to the phenotype of the organism?
The pattern of inheritance in which both alleles contribute to the phenotype of the organism is codominance. For example white and red hair color in cattle. Black and white feather color in certain chickens.
What is the pthenotype for each genotype?
Genotypes are the specific allele combinations that an individual contains pertaining to a certain trait. Phenotypes are what is expressed due to the genotype. (recessive/dominant/codominant)
Can you determine a persons genotype based on phenotype?
In some cases but not others. Certain alleles can be dominant, which means that they will dictate the phenotype should there be a clash of alleles in the genotype. Other alleles can be recessive, which means you'd need both of these alleles in these genotype in order for it to dictate the phenotype. This means that if a person's phenotype represents a dominant trait, we cannot be certain what their genotype is. If, however, it represents a recessive trait, we know that their genotype must be the recessive allele twice.
What is phenotype frequency?
A ratio of individuals with a particular phenotype to the total number of individuals in the population. Individuals with certain phenotype --------------------------------------------------- (Over) Total # of individuals within the population The distribution of traits in a population
What factor determines whether a particular phenotype occurs more frequent than others in certain population?
Gene frequency
In a population that is not undergoing natural selection for a certain trait what does the phenotype distribution look like?
The distribution will center towards hetrotrophs and thus dominant phenotypes. The distribution approaches all dominant phenotypes
What is a phenotype distribution?
The phenotypes for a certain trait in a population <3 Joella
What do dominant and recessive alleles have in common?
Alleles are different types of a gene. Each gene controls a characteristic and they is usually a recessive allele and a dominant one. The main similarity is that they both control a certain characteristic!
What is meant allele frequency?
How often a certain allele (or trait) occurs in a certain population.
The phenotype frequency in a population changes after each generation Which would most likely be causing this?
Competition between organisms (Apex)
Pattern of inheritance in which both alleles contribute to the phenotype of the organism?
The pattern of inheritance in which both alleles contribute to the phenotype of the organism is codominance. For example white and red hair color in cattle. Black and white feather color in certain chickens.
What is the probability that certain genotypes and phenotypes will occur?
This depends entirely on the genotype of the parents. The probability of getting a specific genotype is the probability of getting the correct allele from mother (1/2) multiplied by the probability of getting the correct allele from father (1/2) multiplied by the number of ways this can occur. The probability of getting a phenotype, if the phenotype is dominant, is the sum of the probability of getting two dominant alleles, and the probability of getting one dominant allele. If the phenotype is recessive, the probability is equal to the probability of getting two recessive alleles.
What is evolution in genetic terms?
In terms of a population, evolution is just the change of allele frequencies over time. Natural selection can cause certain advantageous alleles to increase in frequency, and detrimental alleles to decrease in frequency.
What an organism looks like as a result of its genes?
For the sake of simplicity the discussion here will be of mendellian genetics. The way an animal looks (phenotype) may only represent a portion of it's genotype since dominant traits mask the expression of recessive ones. Behavior is not explained by genetics in many cases...the more complex the organism the more likely behavioral nuance is affected by elements beyond genetics.
How can the isolation of populations lead to specification?
it leads to specification because you separate the populations and a population with a certain trait will become dominant over a certain area of land or mass.
