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What kind of allele must an organism inherit in order for a recessive trait to show up?
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).
What else can I help you with?
What is a gene whose effect can be hidden?
A recessive gene is a gene whose effect can be hidden in the presence of a dominant allele. This means that an individual needs to inherit two copies of the recessive allele in order for its effects to be observed.
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.
Are freckles dominant recessive or dominant dominant?
Freckles are considered a dominant trait, as they are caused by a dominant allele. This means that individuals only need to inherit one copy of the allele from either parent in order to have freckles.
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?
A plant with yellow pods can never be a hybrid because yellow pod color is controlled by a recessive allele, meaning the plant must inherit two copies of this allele to display the yellow color trait. Therefore, a plant with yellow pods necessarily has two copies of the recessive allele and cannot have a dominant allele for green pods.
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 to have a recessive trait an organism must have what copies of he recessive allele?
In order to express a recessive trait, an organism must have two copies of the recessive allele, one inherited from each parent. This is because the presence of a dominant allele will mask the effect of the recessive allele, preventing the recessive trait from being expressed. Thus, only when both alleles are recessive will the trait be visible in the organism's phenotype.
What is a gene whose effect can be hidden?
A recessive gene is a gene whose effect can be hidden in the presence of a dominant allele. This means that an individual needs to inherit two copies of the recessive allele in order for its effects to be observed.
What is tessesive trait?
In genetics, a recessive trait is a characteristic that is only expressed when an individual has two copies of the recessive allele. This means that an individual must inherit two copies of the specific allele (one from each parent) in order for the recessive trait to be visibly manifested in the phenotype.
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.
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 does it mean that CF is a recessive gene?
The phenotype associated with a recessive gene is only expressed when two copies of the gene are present. For example, if a person has both a recessive allele and a dominant allele for CF, the person does not have CF. The person only has CF if he/she has two copies of the recessive allele.
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.
Why are recessive alleles not always expressed as the phenotype?
recessive alleles get masked to show the difference in a dominant gene and a recessive gene. the dominate genes masks the recessive genes to show that the dominate gene is more dominate or more likely to be the outcome than the reccessive gene but the masked gene is not always recessive.
Why are dumpy wings recessive or dominant trait?
Dumpy wings in fruit flies are a recessive trait. This means that an individual must inherit two copies of the dumpy wing allele (one from each parent) in order to exhibit the dumpy wing phenotype. Dominant traits, on the other hand, only require one copy of the allele to be expressed. In the case of dumpy wings, the presence of the wild-type allele (normal wings) masks the expression of the dumpy wing allele, making it recessive.
Are freckles dominant recessive or dominant dominant?
Freckles are considered a dominant trait, as they are caused by a dominant allele. This means that individuals only need to inherit one copy of the allele from either parent in order to have freckles.
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?
A plant with yellow pods can never be a hybrid because yellow pod color is controlled by a recessive allele, meaning the plant must inherit two copies of this allele to display the yellow color trait. Therefore, a plant with yellow pods necessarily has two copies of the recessive allele and cannot have a dominant allele for green pods.
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.
