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What are the possible genotypes of the parents of a child with Rett Syndrome?
Wiki User
∙ 11y ago
The parents have normal sex chromosome genotypes, XX and XY. The chromosomal error that causes Klinefelter's syndrome occurs during the formation of either of the parent's gametes during meiosis.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoXX or XY OR XX(women can only be carriers) or XY(women with carrier gene that mates with male has 50% chance of spreading it to male) if male or female has either carrier gene or affected gene, then child has 50% chance of getting it.
Wiki User
∙ 14y agoFragile X syndrom is not caused by a classical Mendelian mechanism. It is caused by repeated regions of DNA on the X chromosome. With the information given in the question and the possibility for a new mutation to have been generated in this generation all genotypes are possible. The gender of the affected child and state of health of the parents would help narrow down the possibilities.
Wiki User
∙ 13y agothey're genotype is most likely heterozygus or homozygus dominate.
Wiki User
∙ 11y agoi really dont know. the parents can be normal even if the child has rett syndrome. rett syndrome is caused by a mutation.
Wiki User
∙ 14y agoyou could die we dis
Wiki User
∙ 15y agoXx,Xx or Xx,xx or xx,xx
Wiki User
∙ 13y agohdhsagvgtsejh
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A child is born with attached earlobes but both parents have hanging earlobes. What are the genotypes and phenottypes fot the parents?
lets use "A" Aa and Aa aa
Is there a way to avoid transferring Morquio's syndrome from parent to child?
There is no way to be absolutely positive that your child will not have Morquio's syndrome if both parents have the gene, but there are genetic screenings to help prevent having a child with Morquio's syndrome.
If one parent has A-blood and the other has A plus blood is it possible for the child to have O-blood?
Yes! The genotypes of the parents can only be "OO" (means two O genes) so both of them cannot give a "B" gene to the child
Is it possible for a child to be O negative if both parents are?
O- would be the only possible blood type for the child.
If you have a brother or a sister with Down syndrome does this increase the chances of giving birth to a child with Down syndrome?
no if the one of the parents have it and it is genetic then yes. but in this case no because it is not genetic
Is it possible for two A-positive parents to have an O-negative child?
Yes, it is quite possible. It does require both parents to have AO(+-) genotypes, which is somewhat rare, however.
Is it possible for 2 parents with down syndrome to produce a child with no non-disjunction disorder please explain why?
Since Down Syndrome is not genetic and is a trisomy, dominant and recessive genes do not play a role and it is possible for two down syndrome parents to have a child without down syndrome.
Can an A plus and an A- parents have an O- child?
Yes. It would take too long to explain genotypes and phenotypes, just know that it is possible.
Is it possible for 2 parents with down syndrome to produce a child with no non-disjunction disorder please explain?
No, it is possible for 2 parents with down syndrome to produce a child with no non-disjunction disorder because of a gamete is produced with an extra copy of the chromosomes.
Mother o positive father o positive and child also o positive is possible or not?
Yes, it is possible. Parents who are O positive may have children who are O+ or O-, depending on the parents' genotypes.
Would parents pass down syndrome to their future children?
No. Parents who have a child with Down syndrome do not have an increased chance in having another child with Down syndrome. Everyone has the same chance of having a child with Down syndrome, 1%.
Can an b negative parent and a a positive parent have a o positive child?
Yes, it's possible but there are very slim chances. It depends heavily on the genotypes of both parents
Can an A negative parent and a B positive parent have a B negative child?
Yes, it's possible but there are very slim chances. It depends heavily on the genotypes of both parents
How could two parents with blood types a and b have a child with o?
If the parents had the genotypes AO and BO, then they could have a child with Type O blood (there would be a 25% chance of this occurring).
A child is born with attached earlobes but both parents have hanging earlobes. What are the genotypes and phenottypes fot the parents?
lets use "A" Aa and Aa aa
Is there a way to avoid transferring Morquio's syndrome from parent to child?
There is no way to be absolutely positive that your child will not have Morquio's syndrome if both parents have the gene, but there are genetic screenings to help prevent having a child with Morquio's syndrome.
What are the chances a child will be born with a hereditary disorder or disease?
Depends on the disease- dominant gene or recessive gene- and the genotypes of the parents.
