0
When two dominant alleles blend to form an intermediate phenotype, the resulting offspring will exhibit a combination of traits from both alleles. This is known as incomplete dominance, where neither allele is completely dominant over the other, leading to a unique and blended phenotype.
What else can I help you with?
What Happens when genes are neither recessive nor dominant?
When genes are neither recessive nor dominant, they are said to exhibit incomplete dominance or co-dominance. In incomplete dominance, both alleles are expressed in the phenotype, resulting in a blending of traits. In co-dominance, both alleles are fully expressed in the phenotype, leading to a combination of traits.
Organisms that are homozygous dominant and those that are for a trait controlled by simple dominance have the same phenotype?
Because the dominant gene always appears in the phenotype, whether or not it is "pure" (homozygous) or "mixed" (heterozygous). The recessive gene does what it says: it is recessive to the dominant gene. So, if it comes between the two, the dominant always appears. Of course, this only happens in your average Dominant-Recessive traits.
What happens to the recessive allele in a heterozygous offspring?
In a heterozygous offspring, the recessive allele is present, but it is overridden by the dominant allele in terms of physical expression. The recessive allele still remains in the genetic makeup of the offspring and can be passed on to future generations.
What happens when different alleles of the trait are present?
When different alleles of a trait are present, one allele may be dominant over the other, expressing its associated trait while the recessive allele remains hidden. In some cases, both alleles may exert influence, resulting in a blending or co-dominant expression. Additionally, the presence of multiple alleles can lead to a range of phenotypic variations within a population.
Is A heterozygous pair of alleles is identical?
When there are heterozygous alleles for a gene thy code for a different expression of the gene. For example, the gene to taste PTC paper is a single gene trait. A person will have two copies (or alleles) for that gene (one from their mothers DNA, one from their father). There are two possible expressions for this gene - either you can taste the chemical or you cannot. When one allele is for tasting, and the other for not tasting, this is known as heterozygous. Both alleles are relating to the same gene but they giving different instructions and are thus not identical. When this happens, the dominant gene wins - in this case tasting is expressed. If the alleles are identical, they are known as homozygous and they are identical.
What happens if an organism has two factors for a domintnat trait?
If an organism has two factors (alleles) for a dominant trait, the dominant allele will be expressed in the phenotype. This is because dominant traits mask the effect of recessive alleles, so the presence of two dominant alleles will result in the dominant trait being displayed.
What Happens when genes are neither recessive nor dominant?
When genes are neither recessive nor dominant, they are said to exhibit incomplete dominance or co-dominance. In incomplete dominance, both alleles are expressed in the phenotype, resulting in a blending of traits. In co-dominance, both alleles are fully expressed in the phenotype, leading to a combination of traits.
How does codominance work and why does it happen?
Incomplete dominance occurs when a homozygous genotype produces an intermediate, or middle phase before the result. This intermediate is the heterozygous' phenotype.
Which statement is TRUE about multiple alleles?
MULTIPLE CHOICES a. It happens when two or more alleles control the inheritance of a character. b. It refers to traits that are controlled by genes located on the same-sex chromosomes. c. It occurs when two dominant alleles of a contrasting pair are fully expressed at the same time in a heterozygous individual. d. It occurs when the phenotype of the offspring is somewhere in between the phenotype of both parents.
Organisms that are homozygous dominant and those that are for a trait controlled by simple dominance have the same phenotype?
Because the dominant gene always appears in the phenotype, whether or not it is "pure" (homozygous) or "mixed" (heterozygous). The recessive gene does what it says: it is recessive to the dominant gene. So, if it comes between the two, the dominant always appears. Of course, this only happens in your average Dominant-Recessive traits.
If the alleles are neither dominant or recessive what happens?
If neither are Dominant Or Recessive then its called co dominance or spuedo - dominance
What happens in co dominance inheritance?
both of the genotypes alleles mix and create a color for instance if a gene has two alleles and this gene is for a flower color and one allele is red and one white if there is co domminence the phenotype would be pink...
What happens when a population is in hardy wienberg equilibrium?
Allele frequency is stable The phenotype frequency does not change.
What happens when alleles for a trait are codominance?
Codominant allele means both the alleles are strong (not recessive small case alphabets are for recessive) so it will give both features the alleles physical appearance (Phenotype) Eg Red flower allele R and White flower allele W will produce Pink flower as both Capital letter R and capital letter W denote both as dominant.
What happens to a characteristic when there is only one recessive allele?
When there is only one recessive allele present for a characteristic, the dominant allele will be expressed in the phenotype. The individual will exhibit the trait associated with the dominant allele, while still carrying the recessive allele in their genetic makeup.
What happens when a dominant and recessive allele are both present?
The resulting offspring will have the dominant trait. It depends on if the dominant is hetero or homo...if it was homozygous then your offspring will have a hetozygous trait showing the dominant trait (to clear this up if you are confused lets say we are talking about brown eyes(BB-dominant) vs blue eyes(bb-recessive)--a homozygous would give you a brown eyed child with Bb and but if the person is heterozygous Bb and gets with a recessive you have a chance of getting Bb or bb giving you a possibility of a brown or blue eyed child)...wow i just made that way more confusing than it had to be
What happens to A trait controlled by a dominant gene?
yes, if two Bb parents have kids, there is a 3:1 ratio that their children will show a dominant trait (BB Bb Bb bb). For multiple alleles (3 or more) it gets a little more complicated. Some traits, like height, have 1000's of genes affecting them. Consult your biology teacher for more information.Yes. Because to have a dominant trait you can have two dominant alleles or just one dominant and one recessive (because a dominant allele negates the effect of a recessive allele.) To get a recessive trait it takes two recessive alleles as oppose to a dominant trait where it takes only 1 to have a dominant trait. Therefore Dominant traits are more common.
