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For a recessive sex-linked trait to manifest in women it would have to be in double dose (XaXa) while for men in single dose (XaY). Women carriers would have one of each but would not be affected (XAXa). Knowing this it's quite easy to spot pedigrees where this kind of inheritance occures.
- Heterozygote mothers (gene carrier) can have sons that are affected (50% chance);
- Affected mothers have only affected sons (100%);
- No first generation daughter of an heterozygote mother will be affected but there is a 50% chance that she is a carrier;
- Affected fathers with normal mothers will have zero sons that are affected but all their daughters will be carriers;
What else can I help you with?
What is allele masked by the dominant allele?
An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).
This pedigree is for a human genetic disease called sickle cell anemia. Assuming that the allele for the disease is recessive how many of the females shown have the disease?
None. =]
What allele is covered up by the dominant allele?
An allele that's masked by a dominant gene is called a "Recessive"recessiverecessive traitThe recessive allele. Often depicted as the "small r" in examples: Rr, R=dominant, r= recessive.
An allele that is hidden by other alleles is called?
i think the answer your lokking for is recessive Recessive is when you have a trait in your genome but it doesn't show in your physical appearance
Why will a recessive allele not show up if?
A recessive allele will not show up if there is a dominant allele present.
What is the pedigree of a rare recessive phonotypr determined by a recessive allele?
this question makes no sense.
What does dominant pedigree means?
A dominant pedigree refers to a pattern of inheritance in which a dominant allele on a gene is expressed in the phenotype of an individual, masking the effects of a recessive allele. This results in the dominant trait being exhibited in individuals who inherit at least one copy of the dominant allele.
What is allele masked by the dominant allele?
An allele that is masked by the dominant allele is called a recessive allele. When an individual has one dominant allele and one recessive allele, only the trait determined by the dominant allele will be expressed. The recessive allele will only be expressed if an individual has two copies of it (homozygous recessive).
How is a recessive trait in a pedigree?
In a pedigree, a recessive trait is typically represented by filled-in shapes (squares for males and circles for females) to indicate individuals who express the trait. A recessive trait appears in an individual only if they inherit two copies of the recessive allele, one from each parent. Consequently, unaffected parents can have affected offspring if both are carriers of the recessive allele. The pattern often shows skipped generations, as the trait can be passed through carriers without manifesting.
This pedigree is for a human genetic disease called sickle cell anemia. Assuming that the allele for the disease is recessive how many of the females shown have the disease?
None. =]
Is albinism controlled by a dominant allele or by a recessive allele?
Recessive allele.
Does a recessive allele need another recessive allele to be expressed?
Yes, a recessive allele needs to be paired with another recessive allele in order to be expressed. This is because recessive alleles are only expressed when an individual has two copies of the recessive allele, one from each parent. If an individual has one dominant allele and one recessive allele for a particular trait, the dominant allele will be expressed.
What is the term for an allele that is not expressed in the phenotype of a heterozygous individual?
incomplete dominance source: PH Bio textbook
Is albinism controlled by a dominant allele o recessive allele?
It is controlled by a recessive allele.
What allele is covered up by the dominant allele?
An allele that's masked by a dominant gene is called a "Recessive"recessiverecessive traitThe recessive allele. Often depicted as the "small r" in examples: Rr, R=dominant, r= recessive.
An allele that is hidden by other alleles is called?
i think the answer your lokking for is recessive Recessive is when you have a trait in your genome but it doesn't show in your physical appearance
How is a recessive allele from a dominant allele?
its different because adominant allele is in charge
