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A carrier is someone who does not have a disorder but carries the allele on to offspring.
A carrier of a recessive disorder would typically have one copy of the normal allele (denoted by a capital letter) and one copy of the mutated allele (denoted by a lowercase letter). For example, for a recessive disorder controlled by a single gene, the genotype of a carrier would be represented as Aa, where "A" is the normal allele and "a" is the recessive allele.
A carrier is a person who has one recessive allele for a trait, but does not have the trait. For example (where colorblindness is the trait [the trait is noted as c):
- Jamal and Kim is a couple. Jamal is colorblind (Xc Y) while Kim is not (X X). Since Jamal has the trait, he will pass the trait down to his children. Kim, on the other hand, does not pass the trait because she doesn't have the trait. Let's say they both of them have a child named Gwen. Gwen is a girl. Since colorblindness is passed down on the X chromosome, Gwen only has one allele for colorblindness (Xc X). She needs both X chromosomes in order to be colorblind. Therefore, she is a carrier. She is not colorblind, but she is able to pass down the trait to her children.
A carrier has one copy of the allele and does not exhibit symptoms.
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How is a carrier different from a person who has genetic disorder?
A carrier is a person who has one copy of a gene mutation for a genetic disorder but does not show symptoms themselves. A person with a genetic disorder has two copies of the gene mutation and will exhibit symptoms of the disorder. Carriers can pass the gene mutation on to their children, increasing the risk of the disorder being present in future generations.
A homozygous genotype where both alleles are recessive are called?
A homozygous genotype with both alleles being recessive is called a homozygous recessive genotype. This means that both copies of the gene are the same recessive allele, resulting in the expression of the recessive trait.
Is alkaptonuria caused by a recessive or dominant allele?
Alkaptonuria is caused by a recessive allele. It is an autosomal recessive disorder, meaning that an individual needs to inherit two copies of the defective gene (one from each parent) in order to have the condition.
Term for a genotype in which there are two recessive alleles?
A genotype consisting of two different alleles is a heterozygote.
Which alleles is the recessive alleles?
Recessive alleles are alleles that are masked or overshadowed by dominant alleles. In a heterozygous genotype, the recessive allele does not show its effects. Only in a homozygous recessive genotype does the recessive allele manifest its trait.
You can be a carrier of a recessive gene as part of your?
You can be a carrier of a recessive gene as part of your genotype.
What is the genotype of a person who is a carrier of a autosomal recessive trait?
The genotype of a person who is a carrier of an autosomal recessive trait is typically heterozygous, meaning they carry one copy of the recessive allele and one copy of the dominant allele for that trait. This would be represented as Aa, with the lowercase "a" representing the recessive allele.
How can you tell if someone is a carrier?
If their genotype contains both a dominant and a recessive allele for a trait.
Can a person be a carrier for a dominant genetic disorder?
Anyone can be a carrier of a recessive genetic disorder (as long as it is not associated with the sex chromosomes) no matter what their gender since "carrier" refers to an individual that is heterozygous for the recessive allele and therefore phenotypically normal. Specifically, sexlinked genetic disorders can be "carried" by a heterozygous female but males (having only one X chromosome) cannot. Males will either be free of the defective gene or be affected.
What is the genotype of an individual with albinism?
I think no. It's caused by a recessive gene so if a person has albinism their genotype can only be recessive, recessive ---> AA (small a small a or whatever you call it). No other genotype will mean that person has Albinism, like if it has at least one big A, that means it's just a carrier of albinism.
Who is a person that is a carrier for a sex-linked recessive disorder?
Usually female.
How is a carrier different from a person who has genetic disorder?
A carrier is a person who has one copy of a gene mutation for a genetic disorder but does not show symptoms themselves. A person with a genetic disorder has two copies of the gene mutation and will exhibit symptoms of the disorder. Carriers can pass the gene mutation on to their children, increasing the risk of the disorder being present in future generations.
Is a person who is homozygous recessive for a recessive genetic disese a carrier?
As long as a persons genotype consists of at least one recessive gene, they can pass it on to offspring to give them the disease, which makes them a carrier. Since this persons genes are both recessive, it is definite that they will pass on the recessive gene.
Is cystic fibrosis dominant or recessive?
Cystic Fibrosis is recessive. If you have one CF gene and one non-CF gene, you will be a carrier but not have CF.
What is being carried by a genetic carrier?
A genetic carrier has a dominant and a recessive version of an allele. Normally, the term genetic carrier is used in relation to genetic illnesses where two copies of the recessive allele cause that illness. Therefore, a carrier does not have the illness themself (as the dominant, non-disease allele is expressed over the recessive allele). However, they have the ability to create an offspring who has the double recessive genotype and therefore has the condition if they mate with another carrier or someone who is double recessive (who has the disease).
If you were a carrier of one allele for a certain recessive disorder how could genetic counseling help you prepare for the future?
Well, genetic counseling usually tells someone the consequences of their recessive disorder.
Is TTT an example of a homozygous recessive genotype?
No, TTT is not an example of a homozygous recessive genotype. In genetics, a homozygous recessive genotype would have two copies of the same recessive allele, such as tt. TTT would indicate a homozygous dominant genotype.
