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What is an individual who has a recessive disease causing allele?
An individual with a recessive disease-causing allele carries one or two copies of the allele for the disease but may not exhibit symptoms if they have a dominant normal allele. If they have two recessive alleles, they will typically express the disease. Carriers, who possess one recessive allele and one normal allele, can pass the allele to their offspring, potentially leading to the disease in subsequent generations if both parents are carriers.
Is hemophilia A sex-linked?
Yes, hemophilia A is a sex-linked recessive genetic disorder caused by a mutation in the F8 gene on the X chromosome. It primarily affects males, who inherit the defective gene from their mothers. Females can be carriers of the gene and may pass it on to their children.
What is a true of sex linked inherited diseases such as hemophilia?
Yes, as in only males can have hemophilia.
What is the chance that any child will inherit the dominant allele if one parent does not carry the allele and the other is heterozygous for it?
The chance that any child will inherit the dominant allele in this scenario is 50%. If one parent does not carry the allele, they can only pass on the recessive allele. The parent who is heterozygous for the dominant allele can pass on either the dominant or recessive allele, resulting in a 50% chance for each allele to be inherited by the child.
What is a carrier for hemophilia?
A carrier for hemophilia is a female who carries the genetic mutation for hemophilia on one of her X chromosomes, but does not exhibit symptoms of the condition herself. Carriers can pass on the gene mutation to their children, resulting in hemophilia in male offspring. Testing can confirm carrier status.
Which of the parents can pass the allele for hemophilia to a son. Explain?
The allele is on the X-chromosome, of which females have two, but males only one (the other being a Y-). If a woman has one faulty and one good X, she shows no symptoms, but stands a 50% chance of passing the bad one on to her son or daughter.
Can xHxH be hemophillia?
Yes, xHxH can represent a female carrier of hemophilia, where "H" denotes the hemophilia allele and "x" denotes the normal allele. In this case, the individual has one normal allele and one allele for hemophilia. However, a female carrier typically does not exhibit symptoms of hemophilia but can pass the allele to her offspring. Males with the genotype "xHy" (where "y" is the male chromosome) would express the condition due to having only one X chromosome.
Baby Y has parents with AB and A blood types have a daughter with type A blood, what is baby Y’s genotype?
The blood type A is determined by having either two A alleles (genotype AA) or one A and one O allele (genotype AO). In this case, since the parents have blood types AB and A, they can only pass on an A allele or a B allele to their child. If the parents have a daughter with blood type A, it means they both contributed an A allele, as the daughter cannot have a B allele since her blood type is A. So, the genotype of the daughter is AO. Now, if we consider Baby Y, we can infer that Baby Y could inherit one A allele from one parent (let's say from the parent with blood type A) and one A allele or one B allele from the other parent (the parent with blood type AB). Therefore, Baby Y's genotype could be either AA or AB.
Hemophilia is a sex linked recessive disorder Mary does not have the disease but both of her brothers do Neither of her parents have the disease What are Marys parents genotypes indicates pr?
Mary's father is normal and has a normal genotype XY while her mother is the carrier of hemophilia and has one X of her genotype infected i.e. she is X*X.
A woman is a carrier for hemophilia what are the chances for sons with hemophilia if the father does not have hemophilia?
Since the gene for Hemophilia is carried on the X chromosome and males pass only their Y chromosome onto their sons, no their sons should not have hemophilia. Of course all daughters of a male with hemophilia will be carriers of the mutation since they with receive his X chromosome, not the Y.
Are some boys carriers for hemophilia?
A male with hemophilia does in fact carry the genes and can pass them on to his daughters, so yes, some boys (if they have hemophilia) are carriers.
Who did Queen Victoria pass hemophilia to?
Queen Victoria had three children that she passed hemophilia on to. Her daughter Alice was a carrier and passed it on to two daughters and a son. Her daughter Alexandra passed it on to her son, and it is not known wither her daughters were carriers. Alice also passed it on to her daughter Irene who married her cousin Henry (brother of William II) and had two hemophilic sons Queen Victoria's son Leopold was afflicted with hemophilia as well. Because of the laws of genetics his son was free of the disease but his daughter passed it on to her son who was also afflicted with hemophilia. Queen Victoria's daughter Beatrice was also a carrier of hemophia. She passed it on to two sons, who died before procreating and a daughter Victoria Eugenia Queen of Spain who had hemophiliac sons and also may have passed it on threw her daughter. Rechearchers are not sure about later generations because as the later generations were no longer royal it was easier to hide hemophilia.
What is an individual who has a recessive disease causing allele?
An individual with a recessive disease-causing allele carries one or two copies of the allele for the disease but may not exhibit symptoms if they have a dominant normal allele. If they have two recessive alleles, they will typically express the disease. Carriers, who possess one recessive allele and one normal allele, can pass the allele to their offspring, potentially leading to the disease in subsequent generations if both parents are carriers.
Do Parents with the dominant phenotype cannot have offspring with the recessive phenotypeous for a trait that is?
No. Parents with the dominant phenotype might be heterozygous in their genotype. This means they could carry both the dominant and recessive allele for a trait. So they could both pass the recessive allele to an offspring, who would then have the homozygous recessive genotype and recessive phenotype.
A man who carries an X-linked allele will pass it on to?
All his daughters, who will inherit one copy of the X-linked allele and become carriers themselves, but not his sons. Sons inherit a Y chromosome from their father and an X chromosome from their mother.
Can an O positive mother and a B positive father have a B negative child?
Yes. If both parents are heterozygous for the Rh factor, each could pass on a recessive Rh negative allele to the child. Since the father has the B blood group, it is possible for him to pass on his B allele to the child. So these two parents could have a B negative child.
Is hemophilia A sex-linked?
Yes, hemophilia A is a sex-linked recessive genetic disorder caused by a mutation in the F8 gene on the X chromosome. It primarily affects males, who inherit the defective gene from their mothers. Females can be carriers of the gene and may pass it on to their children.
