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Why are traits controlled by recessive alleles on the X chromosomes are more common in males then in females?
In males, they only have one X chromosome, so if they inherit a recessive allele for a certain trait on their X chromosome, it will be expressed because there is no corresponding dominant allele on the Y chromosome to mask it. Females have two X chromosomes, so even if they inherit a recessive allele on one X chromosome, the dominant allele on the other X chromosome can mask its expression.
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Traits controlled by recessive alleles on the x chromosome are more common in males than in females explain why?
Males only have one X chromosome, so even if the gene on that chromosome is recessive there is no other gene that could dominate it. Females have two X chromosomes, so if the gene on that chromosome is recessive there is still a chance that the gene on the other chromosome could be dominate and override it.
Do males and females have different chromosomes?
Yes, males typically have XY chromosomes and females typically have XX chromosomes.
Are sex linked traits more or less likely to show up in males?
Sex-linked traits are more likely to show up in males because they are located on the X chromosome. Males only have one X chromosome, so a recessive allele on the X chromosome will be expressed, whereas females have two X chromosomes and would need to inherit two recessive alleles to express the trait.
How are the alleles for sex-linked traits inherited?
Sex-linked traits are inherited through alleles located on the sex chromosomes, specifically the X and Y chromosomes. In humans, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). Since sex-linked traits are carried on the X chromosome, they are inherited differently in males and females. Males inherit sex-linked traits from their mothers, as they receive their only X chromosome from their mother. Females can inherit sex-linked traits from both parents, as they receive one X chromosome from each parent.
Is colorblindness a dominant or recessive trait?
Color blindness is an inherited trait that can be passed on through reproduction but it has some peculiarities. It is recessive and not very prevalent in the gene pool. Because of this, color blindness does not appear very often in the population. In addition, it is a sex-linked gene on the X chromosome. Thus males only have one gene to express color vision. If it happens to be the recessive allele, then males are color blind. Females, on the other hand, must have both alleles recessive in order to be color blind.source: ciese.org/curriculum/genproj/activity35.html
Why are traits controlled by recessive alleles on the X chromosome are more common in males than in females?
Males only have one X chromosome, so even if the gene on that chromosome is recessive there is no other gene that could dominate it. Females have two X chromosomes, so if the gene on that chromosome is recessive there is still a chance that the gene on the other chromosome could be dominate and override it.
Is this true or false in females a recessive allele on the X chromosome is often has no matching allele on the y chromosomes?
True. In females, who have two X chromosomes, a recessive allele on one X can be masked by a dominant allele on the other X. However, since males have one X and one Y chromosome, any recessive allele on their single X chromosome has no matching allele on the Y chromosome, making them more likely to express traits associated with those recessive alleles.
How many alleles for hemophilia do females have?
females have 2 alleles for hemophilia, (X^hX^H) and (X^hX^h) if H is the normal allele and h is the recessive allele for hemophilia
Traits controlled by recessive alleles on the x chromosome are more common in males than in females explain why?
Males only have one X chromosome, so even if the gene on that chromosome is recessive there is no other gene that could dominate it. Females have two X chromosomes, so if the gene on that chromosome is recessive there is still a chance that the gene on the other chromosome could be dominate and override it.
What determines a Mendelian trait?
Chromosomes do not have a sex/gender but determine it. In humans, females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).
Why are sex linked recessive disorders such as hemophilia most often seen in males and rarely seen in females?
The recessive genes are present on the X-chromosome. Female chromosome has another X-chromosome, which is dominant and masks the defective gene, and it is quite rare that both the chromosomes have recessive alleles. But, in males, the Y-chromosome has nothing to over mask the defective gene and the abnormality shows up in the form of the disease.
Why are sex link traits more common in male than females?
Sex-linked traits are more common in males than in females. This because recessive allele in the X chromosome and produces the trait in males.
Traits determined by recessive genes located on the x chromosomes are said to be?
Some traits are determined by recessive genes on the X chromosomes. Many times these are genetic disorders and are called recessive genes.
Why do males get this trait twice as often as females?
Males have XY chromosomes while females have XX chromosomes. The trait is located on the X chromosome, so males have only one copy of this chromosome, making them more likely to express the trait if it is recessive. Females, on the other hand, have two X chromosomes, providing a backup copy that can mask the expression of the trait.
Why do you sex linked traits follow different patterns of inheritance then other traits?
Males and females have different sex chromosomes.
Why are sex-linked recessive disorders such as hemophilia are most often seen in mails and rarely seen n females?
This is due to the fact that females have two X chromosomes while males have only one, lacking a 'back up' copy for the defective gene the defective gene becomes manifest more easily in males. Because females have two X chromosomes and because hemophilia is rare, the chance of a female having two defective copies of the gene is very low, thus females are almost exclusively asymptomatic carriers of the disorder. It is very rare for a female to have hemophilia
Why are males most likely to express a sex linked recessive trait?
Males have only one X chromosome, so a recessive X-linked trait will be displayed in the phenotype [visible on the outside]. Females have two X chromosomes, so both of the chromosomes must have the trait for it to be displayed on the phenotype.
