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Why are traits controlled by recessive alleles on the X chromosomes are more common in males then in females?
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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.
Colorblindness is more common in males than in females because?
the allele for colorblindness is recessive and located on the X chromosomes
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 would recessive traits be more common on boys than girls?
Only sex-linked recessive traits on the X sex chromosome are more common in males. This is because males receive only one X chromosome, so they cannot be heterozygous for a trait on the X chromosome. Females inherit two sex chromosomes, so they can be heterozygous, receiving both a dominant and a recessive allele on the X chromosomes.
The number of chromosomes in a females egg cell is?
46 chromosomes (23 pairs)
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.
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.
Most copies of harmful recessive alleles are carried by?
individuals that are heterozygous for alleles
Why are sex linked recessive conditions more likely in males then females?
Because females have TWO X chromosomes. Males only have one. that means if the recessive gene is on the X chromosome it becomes evident phenotypically.
Colorblindness is more common in males than in females because?
the allele for colorblindness is recessive and located on the X chromosomes
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.
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.
