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What type of trait might be affected by the inactivation of an x chromosome?
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What chromosome is affected by meckel syndrome?
Meckel Syndrome (type 1)is an autosomal recessive trait carried on chromosome 17.
What unusual result suggested that the eye-color trait is located on the X chromosome?
The correlation between the trait of the white eye color and the male sex of the affected F2 flies; there were no corresponding allele present on the Y chromosome.
What are sections of a chromosome that are code for trait?
A section of chromosomes that codes for a trait can be called
How is chromosome involved in the inheritance of trait?
chromosomes contain DNA
Is thalassemia sex-linked trait?
Down syndrome results from a nondisjunction during cell division. That is, homologous chromosomes 21 fail to separate in meiosis I, or sister chromatids 21 during meiosis II or mitosis. Down syndrome is caused by trisomy of chromosome 21 (an extra chromosome to the usual two), which is an autosomal chromosome. Therefore it is not a sex linked disorder.
What chromosome is affected by meckel syndrome?
Meckel Syndrome (type 1)is an autosomal recessive trait carried on chromosome 17.
What unusual result suggested that the eye-color trait is located on the X chromosome?
The correlation between the trait of the white eye color and the male sex of the affected F2 flies; there were no corresponding allele present on the Y chromosome.
How might x inactivation cause patchy hairiness on women who have congenital generalized hypertrichosis even though the disease causing allele is dominant?
Since one X chromosome in each cell is randomly inactivated at some point during development, a woman heterozygous for hypertrichosis would have varying regions of patchy hair if the alleles responsible for the trait were located on the X chromosome. Variation would look similar to the varied tortoise shell coat color pattern on female cats, where the presence of yellow and black (red and gold/blue and cream) is controlled by X chromosome inactivation.
What is X-linked and Y-linked inheritance?
These are traits that are linked to the sex chromosomes. Only males can get Y-linked traits because only males have a Y chromosome. (Note: it's a bit more complicated that even this explanatin, but this is the general idea) If the father has the X-linked trait he can only pass it down to daughters. If the mother has the trait, the daughter might not have the trait because the father's donated X-chromosome might have a gene that masks it. If a son gets donated an X-chromosome from the mother with the trait, he will definitely show the trait.
Why are males more likely to have a sex-liked trait than females?
Males have only one X chromosome. This means that only one copy of the sex-linked trait has to be passed toa male inorder for him to have the trait. If the mother is a carrier her male offspring have a 50% chance of inheriting and having the affected phenotype. Her daughters, will have a 50% chance of being carriers of the trait and could only be affected if the father is affected,
What are sections of a chromosome that are code for trait?
A section of chromosomes that codes for a trait can be called
A dominant x linked trait would be more common in males or females?
If the trait is recessive and on the male chromosome (Y), then it is impossible for females to get it since they do not possess a Y chromosome. If you meant a recessive sex-linked trait on the X chromosome (like male pattern baldness), then males are still more likely to get it since they only receive one X chromosome and if it is affected they would automatically have the trait (whereas females have 2 copies and would only have the trait if both parents passed on chromosomes containing the recessive allele.) Females can be carriers, though. If they are a carrier (have one affected X chromosome) for the trait then their male children would have a 50% chance of inheriting the trait and their female children would have a 50% chance of becoming carriers.
What is an example of a trait inside your body that is affected by your genes?
Male pattern baldness is a common genetic condition passed through the X chromosome that a man gets from his mother.
Section of a chromosome that determines a single trait?
CODON
How might how might a scientist determine whether a trait is sex link by observing the offspring of several genetic crosses?
By observing the proportion of affected offspring and whether males or females are more affected.
Which trait will a male exhibit if he carries a recessive allele on the X chromosome?
A male carrying a recessive allele on the X chromosome will exhibit the recessive trait. This is because the Y chromosome generally does not have matching genes for the X chromosome, unlike the other 22 pairs if chromosomes in the nucleus.
What gender is affected by sex linked traits?
Males are more likely to receive a sex-linked genetic trait because they have only one X chromosome. A certain trait on a woman's X may be covered up by another trait on her other X, men only have one X so they are stuck with whatever trait appears on it.
