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Could two phenotypically normal parents have a child with Hemophilia A?
XhXh - with hemophilia XhXH- carrier of hemophilia
What traits are more likely to be found in males?
Dominant traits.
What are sex-limited traits and how do they manifest differently in males and females?
Sex-limited traits are characteristics that are only expressed in one sex due to differences in anatomy or physiology. These traits manifest differently in males and females because they are controlled by sex-specific hormones or genes. For example, male-pattern baldness is a sex-limited trait that is typically only seen in males due to the influence of male hormones like testosterone.
Why are sex-linked traits more common in males?
Males normally have the dominat gene.
What are sex-linked traits and how do they differ from other types of genetic traits?
Sex-linked traits are genetic traits that are located on the sex chromosomes, specifically the X and Y chromosomes. These traits differ from other types of genetic traits because they are inherited differently based on the individual's sex. For example, males have only one X chromosome and one Y chromosome, while females have two X chromosomes. This means that certain traits carried on the X chromosome may be more commonly expressed in males or females, depending on the specific inheritance pattern.
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.
Sex linked traits are primarily found in?
Males, because they have one X chromosome, in which the traits are carried on. Therefore, if they have one allele they will have that trait because they do cannot have another allele to affect it.
Can males be homozygous?
Yes, males can be homozygous for traits that are located on the sex chromosomes, such as the X and Y chromosomes. For example, a male could be homozygous for a trait on the X chromosome if he inherits the same allele from both his mother and father.
What do slashes mean in sex linked traits?
In sex-linked traits, slashes are used to designate the sex of an individual and the genotype for a specific trait. For example, in females with two X chromosomes and a recessive allele for a trait, the genotype would be represented as X^bX^b (affected) or X^BX^b (carrier). In males, the genotype is represented with just one X chromosome, as in X^bY (affected) or X^BY (unaffected).
Are majority of a males traits inherited from his father?
No, the inheritance of traits is determined by a combination of genetic material from both parents. While males inherit some traits from their fathers, they also inherit genetic material from their mothers. This means that a male's traits are a complex mix of both parental contributions.
What are the inheritance patterns of sex-linked traits in humans?
Sex-linked traits in humans follow specific inheritance patterns based on the genes located on the sex chromosomes. In males, who have one X and one Y chromosome, sex-linked traits are typically passed down from the mother on the X chromosome. In females, who have two X chromosomes, the trait can be passed down from either parent. This results in different patterns of inheritance for males and females when it comes to sex-linked traits.
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.
