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Do you have black hair? Brown hair? That's the result of your alleles. Alleles are forms of genes that alter your phenotype, or your outward appearance. They can be dominant or recessive. A person might be heterozygous (have different types of alleles) or homozygous (same types of alleles).
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What does it mean if the allele frequency in a population consistently changes?
Evolution is defined as a change in frequency of alleles in a gene pool over a period of time. This is evolution on a small scale, hence could be termed...
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What is an allele and how is it different from a trait?
A can be in different form, giving form of . While trait is the combination of allele (genes) that gives rise to the characters being seen. So in essence, genes...
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When one allele of a gene masks the presence of the other allele, what form is masked?
In presence of dominant allele the recessive character can not be expressed, i.e. masked. When recessive allele is present in double dose, only then the recessive character is expressed.
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What is meant by allele frequency?
An allele can have a frequency of $0->1$. If it is $1$, then all organisms in a population are homozygous (for this particular allele). When this occurs, genetic diversity is...
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Pair of genes(allele) are present on only one chromosome or on homologous chromosomes?
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Albinism (lack of skin pigmentation) is caused by a recessive allele. A man and woman, both pigmented, have an albino child together. What is the genotype of the albino child? What is the genotype of the parents?
Since ais is whylbinism is a recessive trait, then it does not show unless it is homozygous in the individual, and this is why the kid is aa. Since the...
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How does an allele determine a genotype?
Alleles are often represented by upper and lower case letters. The upper case letters represent the dominant form while the lower case letters represent the recessive form. The combination...
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Sickle cell anemia is caused by a recessive allele. Roughly 1 out of every 500 african americans is afflicted with sickle cell anemia. How would you use the hardy weinberg equation to calculate the % of heterozygotes for sickle cell allele (.002=q^2)?
The Hardy-Weinberg equation is: $p^2 + 2pq + q^2 = 1" "$ and also $" "p+q=1$ where $p^2$ is the percentage of homozygous dominant phenotype where...
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Given the following information, how would you determine the allele frequencies for the B allele and the b allele? How would you determine the genotype frequencies for the BB, Bb, and bb genotypes?
When the number of individuals are already mentioned derive the frequency in 100 individuals: for this question which will be as following -- Number of homozygous dominant 49% ( $B^2$)...
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If the frequency of the $p$ allele is .63 in the population then what is the frequency of the $q$ allele?
We use the Hardy-Weinberg equation, which states that, $p^2+2pq+q^2=1$ where: $p^2 $is the frequency of the homozygous genotype $"AA"$ $2pq$ is the frequency of the...
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