Is down syndrome sex linked/recessive/or dominant??
Answers: none of the above. Down syndrome occurs when the creation of sperm or egg cells (meiosis) does not occur properly. an extra chromosome (#21) is inadvertently left inside the cell. you and I have two of these chromosomes, (one from dad and one from mom) but a person with downs has three. It does not follow any pattern of mendelian inheritance. It's more common in older mothers since the egg cells used aren't quite as high of quality as when she was younger.
its the presence of an extra 21st chromosome
its the presence of an extra 21st chromosome
More questions & answers:
- Name a homozygous recessive genetic disorder? due tomorrow?
- Is Spina Bifida a Recessive or Dominant Trait?
- What are the genetics of Trisomy 21? (autosomal, sex-linked, recessive, dominant, etc)?
- Recessive genetic disorder?
- What recessive X-linked disorder runs in the english royal family?
- Is angelman syndrome dominant or recessive and is it autosomal or sex-linked?
- What is the difference between dominant and recessive?
- What determines whether an allele is dominant, recessive, or codominant?
- What is the difference between homozygous dominant, homozygous recessive, and heterozygous?
- Is the genetic Disease Polio Dominant or Recessive?
- Is Alzheimer's disease hereditory, and if so is it recessive or dominant?
I agree. Do your own homework.
Spina Bifida is caused by not having enough folic acid in the mother's diet during pregnancy. Chances can be decreased greatly by taking a folic acid supplement prior to conception and during pregnanc
What are the genetic changes related to Down syndrome?
Down syndrome is related to chromosome 21.
Most cases of Down syndrome result from trisomy 21, which means each cell in the bod
Down syndrome is related to chromosome 21.
Most cases of Down syndrome result from trisomy 21, which means each cell in the bod
Please do not quote my answers... it has been a while since AP Bio!! Recesive genetic disorders just mean that both parents have to be carriers of a disease for a child to have it!! If i am not mistak
It's believed to be porphyria - the malady that affected poor King George III - but nowadays they can test for it at birth and administer an appropriate medication to stop it developing.
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Still studying the genetic link to angelman's syndrome. From the research I have done, and who knows how much information on the internet is correct but I believe it is a sex-linked gene.
dominate traits can be expressed in the heterozygous gene state. This means if you have one dominant and one recessive gene the dominant will prevail. ie one blue and one brown, brown will prevail.
the genes of your parents.
Let
R= Dominant trait
r= Recessive trait
Homozygous dominant= RR
Homozygous recessive= rr
Heterozygous= Rr
Heterozygous individuals will have both traits, but its ph
R= Dominant trait
r= Recessive trait
Homozygous dominant= RR
Homozygous recessive= rr
Heterozygous= Rr
Heterozygous individuals will have both traits, but its ph
Polio is not genetic.
To date only dominant genes were linked to Alzheimer's, but there is new evidence, that a recessive gene, may play a role in the development of Alzheimer's.
If you have a family member with Alzhei
If you have a family member with Alzhei