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Does FAP follow a recessive or dominant inheritance pattern and why?
Wiki User
∙ 8y ago
FAP follows both an autosomal recessive and autosomal dominant pattern depending on which gene you inherit the disease from.
If inherited through the APC gene, which is most common, it is autosomal gdthe disease.
If inherited through the MUTYH gene it is autosomal recessive, meaning that both parents were carriers of the disease or they both were living with the disease.
Wiki User
∙ 8y ago
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Why do you sex linked traits follow different patterns of inheritance then other traits?
Males and females have different sex chromosomes.
Is Spina Bifida a recessive or dominant trait?
Spina bifida doesn't follow a strict inheritance pattern, but hereditary factors do play some role, though it is not completely understood yet. Mothers who have had one child with spina bifida have a 3-4% chance of their next child having spina bifida, while the general population only has a 0.1-0.2% chance. In the case a pregnant woman has a family history of spina bifida, it is recommended that they take a higher dose of folic acid than other pregnant women. Here again, folic acid plays a role in preventing neural tube defects (like spina bifida), but the mechanism is not well understood. Also, for an unknown reason, it is more prevalent in female children than in male children.
Why do sex-linked traits follow patterns of inheritance than other traits?
Sexlinked traits follow a different pattern of inheritance than a non-sex linked trait because of the size difference between the X and y chromosomes. Think about non-sex chormosomes as being the same size, each having the exact same number of genes in the same postions (loci). This means that a person has to have two copies of the recessive genes (one on each homolog of that chromosome) before the trait will be expressed. Lets say A is normal (dominant) and a is abnormal (recessive). People who are aa have the abnormal condition and people who are AA or Aa are normal. The normal ratio is 1 AA:2 Aa:1 aa if both parents are Aa. There is a 25% chance that a child will inherit two abnormal genes and the chance of any sex child will be so affected is exactly the same. When a recessive trait is located on the X chromosome only a female with two X chromosomes has the same number of genes on each X chromosome (the two X chromosomes have the same inheritance behavior as a homolog chromosome in females). In males who inherit the much smaller y chromosome there are many genes on the X chromosome that do not have a matching gene on the y chromosome. This means that recessive traits on the X chromosome that have no matching genetic material on the y chromosome will always be expressed. So, lets say that there is a family where the mother is Aa and the father (who only has one allele on the y chromosome is A. (A is normal and a is abnormal). None of the daughters produced can be aa, because the father will always pass A. Daughters will only be Aa or AA. Sons on the other hand, will get either A or a from the mother and, since the y chromosome has no genetic material at this gene locus the boys will be A normal or a affected at in a 1:1 ratio. If the father is a on his X chromosome, and the mother is AA 100% of the daughters will be carriers (Aa) and all the sons will be normal (A-).
Describe the trend or pattern of hurricanes follow?
no
Why do you think the temperature changes follow this unique pattern?
No
What are traits that follow simple dominance and recessive inheritance called?
Genes
Why blending inheritance is incorrect even with some features do appear to blend in nature?
The answer to this is that only a few features appear to blend in nature. These traits are controlled by incomplete dominant alleles, which cause both traits to blend together (such as colors). Most traits are inherited based on independent assortment of alleles in meiosis I and the principles of dominant and recessive traits. By definition, the dominant trait masks the recessive trait. Some features, which seem to blend such as skin color, actually follow normal inheritance patterns. Skin color is controlled by multiple genes. The gene either deposits pigment or doesn't deposit pigment. Since multiple genes can deposit pigments, the skin color has a wide range of possibilities. For example, if skin color is controlled by Gene A, B, and C, then here are a few possibilities for genotypes. AaBbCc, AABBcc, aabbcc, etc. So even though there is continuum of color, the inheritance pattern is not "blending"
Which letters are used for dominated and recessive characteristics?
In genetics, dominant traits are typically represented by uppercase letters (e.g., "A"), while recessive traits are represented by lowercase letters (e.g., "a"). This notation helps geneticists distinguish between dominant and recessive alleles in a genetic cross.
When two pea plants that are heterozygous for yellow peas are crossed.the resulting offspring have a genotypic ratio of?
Because heterozygous means that the parents contain both dominant and recessive genes the offspring will be 75% tall and 25% short. If you were to draw the punnett squares you would see that there are 3 possible children one with only dominant tall traits two with both dominant and recessive traits and one with only recessive traits.
Why do sex-linked trait follow different pattern of inheritance than other traits?
males and females have different sex chromosomes
Definition of dominance in genetics?
On any given locus, there are different possible forms of a gene, called "alleles." There is a dominant allele for each gene, often expressed by a capital letter. Recessive genes are frequently denoted with a minuscule letter. For example, "R" would represent a dominant allele and "r" a recessive one. Every individual has two alleles each gene (for example, Rr, RR, or rr); in this pair, a dominant allele is expressed if it is present, regardless of what other allele is carried. Recessive alleles, conversely, will only be expressed if there are two of them -- rr, in this case. There may be more than two alleles in each set, but they all follow the rule of dominance. For example, ra might be dominant to rb, which might be dominant to r. In some cases, dominance is incomplete. This means that individuals heterozygous for a certain gene -- meaning both the alleles are different, i.e. Rr, as opposed to the same (homozygous) -- will express a different trait than those homozygous recessive (rr) or dominant (RR).
What skin color is dominant white or black?
Skin colour does not follow the rules of being dominant or recessive. Skin colour is controlled by more than one gene or the amount of pigment melanin. So if one parent is white and the other is black, they will end up having a mixed coloured child because the colours blend together.
Do dominant genetic disorders follow mendelian genetics?
how is it possible for a person to have dominant genetic disorder? how is it possible for a person to have dominant genetic disorder?
What was mendels experiment?
pea plants
Why do you sex linked traits follow different patterns of inheritance then other traits?
Males and females have different sex chromosomes.
When you are knitting do you have to follow the pattern?
you have to follow the pattern that they give you if you want to make your product. but you do not have to use the same colors
Do DTD's follow the inheritance principle?
No, Document Type Definitions (DTDs) do not support true inheritance like object-oriented programming languages. However, they do allow for entity declarations that can be reused across different model structures, providing a level of modularity and reuse but not direct inheritance.
