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What kind of allele must an organism inherit in order for a recessive trait to show up?
Wiki User
∙ 15y ago
Neither of the parents will be affected. There may not be any one with he disease in either of the parents families (or there might be). Since each parent is a carrier and has a 50/50 chance of passing one copy of the gene to each child 1/4 of the children will not get the gene, 1/2 will be carriers (1 copy) and 1/4 wil be affected (2 copies).
Pearline Blick
Wiki User
∙ 14y agoExcept in rare cases, you can only inherit one allele per parent per trait (for those of you that don't know, that's two alleles). A recessive trait will be shown if both alleles are for said recessive trait. If one of the alleles is for a dominant trait, then the dominant trait will show. Some genes are tied to environment and exposure to certain things, so a trait may be 'masked' for the duration of a person/organism's life, or at least until they are exposed to it. For example, an allergy to plastic would not be apparent in someone living in Africa unless by chance they came into contact with a plastic bucket, plastic hairbrush, etc., from, say, a visiting doctor from America.
Wiki User
∙ 13y agoOnly one hence it is the dominant trait. So with the alleles A (dominant) and a (recessive), AAand Aa will show the dominant trait, and aa will show the recessive trait.
Wiki User
∙ 15y agoAn organism must inherit two recessive alleles: one from each of their parents.
Wiki User
∙ 13y agoan organism mustinherit two recessive alleles for a trait in order to exhibit that trait and is also called homozygous recessive...
Wiki User
∙ 12y agothe only way a recessive trait will show is if both letters in the genotype are lowercase, making it a purebred reccesive trait.
e.g. tt=visible recessive trait
Wiki User
∙ 11y agoA is dominant and a is recessive.
Aa or AA will phenotypically appear as the dominant characteristic.
Only aa (homozygous recessive) will be phenotypically recessive.
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A trait that requires one allele in order to in order to show up in the phenotype?
Recessive traits require two recessive alleles.
In order for a child to inherit a recessive trait both parents must be carriers of the recessive gene?
No. A recessive gene can be inherited from one parent, a dominant from another, or two alike dominants. (No such thing as two alike recessive, the gene with the furthest back dominant gene. Say a blonde little girl has a blonde hybrid mother and a brown hybrid father. She ended up getting brown recessive. Since both of her parents were hybrid, she only had a recessive hair color gene from one parent.
These alleles show their effect on the phenotype whenever they are present in the genotype?
Dominant alleles carry traits or characteristics that will show no matter what. Recessive alleles carry traits where you must be homozygous for the recessive trait in order for it to show. Dominant alleles are represented by capital letters (EX: R or M) Recessive alleles are represented by lower case letters (EX: r or m) In order for a dominant allele to show, you can have either RR or Rr, since it is dominant. However, in order for a recessive allele to show, you MUST have rr. Hope this helps!
Why is there a greater chance of getting a dominant trait rather than a recessive trait?
A dominant trait occurs when either both alleles are dominant or one allele is dominant and the other is recessive. This is because a dominant allele overpowers a recessive allele. In order to have a recessive trait both alleles must be recessive.
In pea plants green pod color is controlled by a dominant allele Yellow is controlled by a recessive allele Explain why a plant with yellow pods can never be a hybrid?
Because in order to be yellow the only 2 alleles you can have are the 2 recesisve ones, therefore you will always have yellow
What is a trait that will appear in yhe offspring if one of the parents contributes it?
In order for a recessive trait to appear in the offspring, it must inherit a recessive allele for that trait from both parents.
What is the difference between the dominant and recessive allele for a trait?
An individual must have 2 recessive alleles in order for a trait to show up. One must only have 1 dominant allele in order for a trait to occur.
A trait that requires one allele in order to in order to show up in the phenotype?
Recessive traits require two recessive alleles.
In order for a child to inherit a recessive trait both parents must be carriers of the recessive gene?
No. A recessive gene can be inherited from one parent, a dominant from another, or two alike dominants. (No such thing as two alike recessive, the gene with the furthest back dominant gene. Say a blonde little girl has a blonde hybrid mother and a brown hybrid father. She ended up getting brown recessive. Since both of her parents were hybrid, she only had a recessive hair color gene from one parent.
What is a trait that needs two factors in order to be expressed?
Actually, it is the recessive.................................................................UR WELCOME! :)
How many recessive alleles for a trait must an organism inherit in order to show that trait?
Except in rare cases, you can only inherit one allele per parent per trait (for those of you that don't know, that's two alleles). A recessive trait will be shown if both alleles are for said recessive trait. If one of the alleles is for a dominant trait, then the dominant trait will show. Some genes are tied to environment and exposure to certain things, so a trait may be 'masked' for the duration of a person/organism's life, or at least until they are exposed to it. For example, an allergy to plastic would not be apparent in someone living in Africa unless by chance they came into contact with a plastic bucket, plastic hairbrush, etc., from, say, a visiting doctor from America.
Comapre and contrast dominant and recessive traits?
Dominant traits only require one allele to be present in order for the trait to be expressed, while recessive traits must have both alleles present in order for the trait to be expressed.
These alleles show their effect on the phenotype whenever they are present in the genotype?
Dominant alleles carry traits or characteristics that will show no matter what. Recessive alleles carry traits where you must be homozygous for the recessive trait in order for it to show. Dominant alleles are represented by capital letters (EX: R or M) Recessive alleles are represented by lower case letters (EX: r or m) In order for a dominant allele to show, you can have either RR or Rr, since it is dominant. However, in order for a recessive allele to show, you MUST have rr. Hope this helps!
If straight hair is genetic why do you have straight if none f your ancestors did?
it is because the parents each were heterozyous dominant. meaning each of them had a dominant allele and a recessive allele. the dominant allele would be the curly hair, and the recessive allele would be the straight hair. There would be a 1/4 chance that the child would have curly hair, and a 3/4 chance that they would have curly hair. Say that the Curly hair allele was H and the straight hair allele was h. In order for the parents to have curly hair, they would either have to have an HH gamete or an Hh gamete. Seeing as though the child came out with curley hair, both parents would have to have an Hh gamete. In order to find out the probability, you multiply the parents gametes. (Hh)(Hh). This will give you HH, Hh, Hh, hh. seeing has three of the gametes have the dominant allele, this child will have curly hair, and one is a homozygous recessive, so it will turn out with straight hair.
Is a carrier for colorblindness is colorblind?
Not necessarily. The allele for colorblindness is recessive. For a female, in order to be colorblind she must have to recessive alleles for colorblindness. Example: XcXc would be colorblind. XCXc would be a carrier for colorblindness, but not colorblind. For a male, because colorblindness is a sex-linked gene, he only needs one allele to be colorblind. Example: XcY is colorblind. XCY is not colorblind.
Why is there a greater chance of getting a dominant trait rather than a recessive trait?
A dominant trait occurs when either both alleles are dominant or one allele is dominant and the other is recessive. This is because a dominant allele overpowers a recessive allele. In order to have a recessive trait both alleles must be recessive.
Can you marry with a girl whose father having leucoderma?
Why wouldn't you marry her? Leucoderma is a skin condition (thus "derma"--Latin for "skin"), and although it is a hereditary condition, it is a recessive allele. Alleles, if you don't know anything about genetics, are the factors that determine the types of genetic traits you end up with in your DNA. One allele is donated by each parent and the resulting allele pair determines what type of trait the child displays. If a trait is recessive, this means that in order for the child to inherit the trait, both parents must donate the recessive allele. This means that YOU (yup, I'm talking about you again) would have to also have the recessive trait for leucoderma (unlikely if you don't know an immediate family member with the condition) and donate it at the same time as your wife would (even more unlikely, since the two of you each only have one of the recessive alleles). There is a one in four chance that your child would end up with this condition in full, and only a one in two chance of having the recessive allele at all. If you are afraid your children would end up being Albinos, fear not. Leucoderma and Albinoism are not related in the slightest; in fact, leucoderma is actually an immunodeficiency in which the body attacks its own pigmentation cells and kills them.So, stop being silly and marry her already. :)
