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How is carrier different from a person that has a disorder?
The carrier typically remains unaffected by the disorder.
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.
What is the cause of DNA disorders and diseases?
When the DNA molecules spit during Meiosis and a disorder is copied into the baby's new DNA, it might get the disorder, or it may just become a carrier. A carrier has the disease or disorder in it's DNA but doesn't show any symptoms of it. The carrier can still pass the disease or disorder on to their kids though. That's what I learned in grade 11 biology!
What is the percent chance that a normal male and a female carrier will have a child who has the disorder?
You might need to indicate what the disorder is.
What is a genetic carrier?
A carrier is a person who carries a gene(most-likely for a genetic disorder) but do not have the trait controlled by the gene.
Who is a person that is a carrier for a sex-linked recessive disorder?
Usually female.
Sam has hemophilia. Sam's brother mother and father do not have hemophilia. Draw a pedigree showing who has the disorder and who is a carrier?
In a pedigree chart, Sam would be represented by a filled square (male) or circle (female) to indicate that he has hemophilia. Since Sam's brother, mother, and father do not have hemophilia, they would be represented by unfilled squares (male) or circles (female). However, Sam's mother would be a carrier of the hemophilia gene, so she would be represented by a half-filled circle. The pedigree would show Sam with hemophilia, his mother as a carrier, and his brother, father, and other family members without the disorder.
Why can a female be a carrier of a sex linked genetic disorder?
When a female is heterozygous i.e. she possess one allele of disease , she is called carrier .
What is true of sex linked alleles'?
A female with one copy of the allele will be a carrier, but not have the disorder.
Is it true that a male with one copy of the allele will be a carrier of sex-linked alleles but not have the disorder?
No.
What are the odds of offspring having a sex linked disorder if mother is carrier?
The odds depend on the specific sex-linked disorder. For carrier mothers of an X-linked recessive disorder, there is a 50% chance of passing the affected gene to a son (who would be affected) and a 50% chance of passing the gene to a daughter (who would be a carrier). For X-linked dominant disorders, there is a 50% chance of passing the gene to both sons and daughters.
How do you know if a characteristic or disorder is sex linked?
If it occurs most commonly in males, or if the mother is a carrier.
