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What is the expected frequency for a person to have all six recessive characteristic?
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Xin Yee
MUHAMMAD HAMIDULLAH ...
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In the Hardy Weinberg equation shown below P is the frequency of the dominant allele and q is the recessive allele?
Homozygous recessive genotype
Albinism is a recessive trait in humans that is controlled by a single gene how many recessive alleles must a person have to have albinism?
2
If a white person has a baby with a minority who will have the recessive genes?
All ethnicicities have recessive genes, so it's more down to the individuals than the ancestry.
What is an example of recessive trait?
'Albinism' (being an albino, without skin pigmentation) is an example of a recessive trait. Specifically, it is an expressed recessive trait, because that person does not have the dominant gene at all, only two copies of a recessive gene. For a person to be an albino, his/her parents BOTH had to have the recessive gene and the offspring had to inherit THOSE TWO copies and can now only 'express' the recessive gene. There is no dominant gene to undo the albino trait. Side note: there is more than one form of albinism recognized in medical science, but all are examples of recessive traits. Another example of a recessive trait would be 'sickle-cell disease/anemia.'
Why is it that two normal parents could have a child with pku?
PKU, phenolketonuria, is a genetic disease caused by a recessive gene. So, a person with one normal and one faulty gene for this characteristic will not have the disease, you have to have two faulty genes to have the disease. If two people who each have one gene for PKU have a child, that child can inherit the gene from each parent and therefore will have two copies, causing the recessive trait to manifest.
Why can a person have one copy of the CF allele and be perfectly normal?
CF is recessive, and as such, the gene for non-CF is dominant over this gene. The CF gene will only be expressed in the phenotype and as a characteristic if the person has two of the recessive alleles.
In the Hardy Weinberg equation shown below P is the frequency of the dominant allele and q is the recessive allele?
Homozygous recessive genotype
Characteristics of interest?
A characteristic of a person with a high level of interest is they will go above and beyond what is typically expected. They are highly self motivated.
What is a characteristic of a person?
A characteristic is, something that a person does for a living.
What does it mean that CF is a recessive gene?
The phenotype associated with a recessive gene is only expressed when two copies of the gene are present. For example, if a person has both a recessive allele and a dominant allele for CF, the person does not have CF. The person only has CF if he/she has two copies of the recessive allele.
What is the phenotype of an orgarism?
The phenotype is the characteristic or trait that is expressed in the organism. So, for example, if a person has blue eyes, his/her phenotype for eye color is blue. In case you didn't know, the genotype is simply the gene that codes for the phenotype. So with the blue eyes, the genotype of the person for eye color must have been recessive alleles (because blue eyes are a recessive trait).
What is a recesive trait?
A recessive trait is one that is not always seen. Recessive traits can be carried in a person's genes without appearing in that person.
How does a person inherit hemophilia and is it dominant or recessive?
It is a sex-linked recessive trait inherited from the mother.
How long can a recessive gene stay hidden in a person?
A recessive gene will stay with a person for their entire life. Whether it will become obvious that the person is carrying a recessive gene is dependant upon how many copies of the recessive gene the person carries - the effects of a recessive gene will only become obvious if two copies of the gene are carried. Excluding the option of undergoing DNA testing for the recessive gene in question, it is perfectly feasible for a person to live the whole of their life whilst never knowing they carry a recessive gene for a certain condition.
What genotype must the person have who possessed the recessive phenotypes?
The genotype is homozygous recessive or the recessive trait is on the X chromosome and has no corresponding allele on the Y chromosome.
When are recessive lethal genes deadly?
When a person inherits two of the recessive gene, one from each heterogenous parent.
What pattern is apparent in pedigrees charting the inheritance of a recessive trait?
The person with the recessive trait seems to 'skip' a generation
