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Males carry one sex-linked trait.
Females, carry most of the rest.
Sex-linked traits, other than gender, are almost exclusively associated with the X chromosome. That is why it is sometimes said that sex-linked traits are carried by females, but that is not exactly right.
It is not as simple as that, so read on.
Short Explanation:
There are just over a thousand genes on the X chromosome and about 26 on the Y. Of the 26 on the Y, 9 relate to sperm and one (SRY) relates to male anatomy, the others involved in general tasks.
Just the fact that there are almost a hundred times more genes on the X chromosome means that traits related to the X, and variations in those traits, are far far more common. In fact, it is even more exclusive to the X than numbers suggest.
Sex-linked traits are those that can only be passed along from the father and not the mother or from the mother and not the father.
Obviously, males do carry and pass on sex-linked traits, just not very many.
Gender can only be passed along from the father, along with genes related to sperm.
Females pass on to the male offspring a larger number of traits, (such as some color blindness and male pattern baldness) which have no counterpart in the Y chromosome.
More:
Males have an X and a Y chromosome and females have two X chromosomes.
Because the Y chromosome is smaller than the X with far fewer genes, there are genes carried only on the X and only gotten from the mother. That does not mean that all males have Y chromosomes that are the same.
Overwhelmingly though, the absence of the set of genes on the Y chromosome results in the corresponding genes on the X chromosome being expressed, in particular all of the X-linked disorders of a gene of an X chromosome in a male do not have a second X gene that can be expressed to compensate. Thus, there are a set of sex-linked traits that can only come from the mother.
(Color blindness and male pattern baldness are the two most discussed examples.)
A male offspring (son) has the same Y chromosome as the father and hence any traits influenced by that chromosome.
A female offspring (daughter) has the same X chromosome as the father and hence any traits influenced by that chromosome. A recessive gene on the X from the father will not usually be expressed in a daughter, but a dominant gene on the X from the father will be expressed in the daughter.
For a female to inherit a trait associated with an X-chromosome recessive gene, there must be two copies, one from each parent.
Aside:
The issue of gender-connected inherited traits has much more complexity than this simple discussion can address. For example, not all of the so-called male characteristics are carried on the male (Y) chromosome. The expression of genes on other chromosomes, from both the mother and father, is influenced by genes on the Y chromosome or simply by the absence of two X chromosomes. The reader should investigate further.
Caveat: This discussion applies to humans and other mammals with the XX/XY sex determination system. See related links.
Fun Fact: A woman discovered that the Y chromosome was male. While studying worms, in 1905, Nettie Stevens at Bryn Mawr College identified the Y chromosome as the determining factor in gender.
What else can I help you with?
How many genotypes are possible in a pedigree of sex linked traits?
In a pedigree of sex-linked traits, there are three possible genotypes for males: XY (unaffected), XeY (affected), and XeX (carrier). For females, there are two possible genotypes: XX (unaffected) and XeX (carrier). This makes a total of 5 possible genotypes in a sex-linked trait pedigree.
What is the pattern of inheritance for a sex-linked recessive trait in a pedigree?
In a pedigree, a sex-linked recessive trait is passed down from carrier mothers to affected sons. Daughters of carrier mothers have a 50 chance of being carriers themselves. Sons of affected fathers do not inherit the trait.
In a cross between individuals of a species of tropical fish all of the male offspring have long fins and none of the females possess the trait Explain a possible inheritance pattern of the trait?
The long fin trait might be controlled by a sex-linked gene located on the sex chromosome carried by males but not females. Since males have only one X chromosome (XY), they would always inherit the gene for long fins from the female parent who carries the trait. Females, having two X chromosomes (XX), would need to inherit the gene from both parents to express the trait.
What is the likelihood that the offspring of individuals IV-3 and IV-4 will inherit the trait?
The likelihood that the offspring of individuals IV-3 and IV-4 will inherit the trait depends on the specific genetic inheritance pattern of the trait. If the trait is determined by a dominant gene, there is a 50 chance that the offspring will inherit the trait. If the trait is determined by a recessive gene, there is a 25 chance that the offspring will inherit the trait.
If a white eyed makes fruit fly were crossed with a heterozygous red eyed female fruit fly what ratio of genotypes would be expected in the offspring?
The cross would result in a 1:1 ratio of white-eyed to red-eyed offspring. Half of the offspring would inherit the white-eyed trait from the white-eyed male, while the other half would inherit the red-eyed trait from the heterozygous red-eyed female.
Boys can inherit an X-linked trait from their?
Father
How many genotypes are possible in a pedigree of sex linked traits?
In a pedigree of sex-linked traits, there are three possible genotypes for males: XY (unaffected), XeY (affected), and XeX (carrier). For females, there are two possible genotypes: XX (unaffected) and XeX (carrier). This makes a total of 5 possible genotypes in a sex-linked trait pedigree.
How does a person inherit hemophilia and is it dominant or recessive?
It is a sex-linked recessive trait inherited from the mother.
A trait that can only be inherited by a male would be a?
Y-linked (sex-linked) - it would only be found on the Y chromosome - and therefore it is impossible for a female to inherit this.X-linked recessive traits are much more likely to occur in males, but it is still possible for a female to have them (if they have a defective gene on both their X chromosomes).
Who do males inherit sex-linked recessive traits from?
Males inherit sex-linked recessive traits from their mothers. This is because males have an X chromosome from their mother and a Y chromosome from their father, so any recessive traits on the X chromosome will be expressed in males.
What is the pattern of inheritance for a sex-linked recessive trait in a pedigree?
In a pedigree, a sex-linked recessive trait is passed down from carrier mothers to affected sons. Daughters of carrier mothers have a 50 chance of being carriers themselves. Sons of affected fathers do not inherit the trait.
In a cross between individuals of a species of tropical fish all of the male offspring have long fins and none of the females possess the trait Explain a possible inheritance pattern of the trait?
The long fin trait might be controlled by a sex-linked gene located on the sex chromosome carried by males but not females. Since males have only one X chromosome (XY), they would always inherit the gene for long fins from the female parent who carries the trait. Females, having two X chromosomes (XX), would need to inherit the gene from both parents to express the trait.
Are sex-linked traits that are recessive phenotypes most often seen in men or woman?
Sex-linked recessive traits are most often seen in men. This is because men have only one X chromosome, so if they inherit a recessive allele for a sex-linked trait on their X chromosome, they will express the trait. Women, on the other hand, have two X chromosomes, so they need to inherit two copies of the recessive allele to express the trait.
What is the likelihood that the offspring of individuals IV-3 and IV-4 will inherit the trait?
The likelihood that the offspring of individuals IV-3 and IV-4 will inherit the trait depends on the specific genetic inheritance pattern of the trait. If the trait is determined by a dominant gene, there is a 50 chance that the offspring will inherit the trait. If the trait is determined by a recessive gene, there is a 25 chance that the offspring will inherit the trait.
Why x-linked recessive more frequent in male in mammal?
A male inherits only one X sex chromosome, so whatever alleles are on that chromosome will be expressed. A female inherits two X sex chromosomes, so there is a possibility that she will inherit at least one dominant allele for a trait, in which case she will have the dominant trait.
How can offspring inherit a recessive trait?
An offspring can inherit a recessive trait if both of its parents are homozygous for the dominant allele.
Is trait sex-linked?
Yes, Thalassemia sex is a linked trait. Ha ;)
