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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.
In X-linked recessive inheritance what sex is the affected?
There are 2 X-linked recessive inheritance where Only Male or Men are the only people who inherits these kind of trait.
Male pattern baldness is a recessive sex-linked trait on the X chromosome Xb A woman whose father had male pattern baldness marries a man with this trait What is the probability that any son boor?
k so. i think you meant marries a woman? lol k so its recessive carried on the X chromosome. Her father genetic make up is X^b Y. marries a woman who has the trait is X^H X^h (since its recessive and dominant overthrows recessive and she has the trait h). so use a punnet square. you should get.. two girls. one is afflicted, the other one carries the trait. two boys: a normal son, and an afflicted son. Hope this helps!
How many dominant alleles are required in a genotype to show the dominant phenotype?
If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait) If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait)
How many copies of a sex linked recessive allele does a male need to exbit the trait?
A male only needs one copy of a sex-linked recessive allele to exhibit the trait because males have only one X chromosome. If the allele is present on the X chromosome, it will be expressed in males.
In the family tree below people with the recessive trait of attached earlobes are shaded gray.?
a male with one recessive allele
If the male parent is heterozygous for a trait what alleles for each sperm cell possibly have?
A heterozygous male parent has two different alleles for a trait. During gamete formation, each sperm cell will carry one of the two alleles, either the dominant or recessive allele. This means that half of the sperm cells will carry one allele and the other half will carry the other allele.
Is an x linked dominant trait the same as an x linked recessive gene?
An X-linked recessive trait is coded for by a gene on the X-chromosome and is not dominant (is canceled out by the presence of a different allele). Example of X-linked recessive traits are; Haemophilia A & B and Duchenne muscular dystrophy.
If a daughter expresses an x-linked recessive gene she inherited the trait from?
If a daughter expresses an X-linked recessive gene, she inherited the trait from her father who carries the gene on his X chromosome. Since males only have one X chromosome, if they have the gene, daughters will always inherit it from their father.
What are examples of recessive traits and dominant traits?
That's strictly a human view point. In fact there is no such difference, you just have two different proteins (one from each gene) which have behaviors relative to each other. How we (us, people) interpret the somatic result of the competition between them is labeled "dominant or recessive". For example - assume one form is totally non functional, then the somatic result would be classed as recessive.
What gender inherits the y-linked trait?
male, their sex chromosomes are XY, females are always XX
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.
