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The traits inherited depends upon the alleles that have been passed on from the father and mother.
The traits that are exhibited is called as the phenotype. Dominant allele needs only one copy to be expressed.
For example in a pea plant "T" represents the tall dominant allele and "t" the short recessive allele .
TT - when there are two dominant alleles the pea plant will express the tall trait. The pea plant is tall.
Tt - when there is one dominant and one recessive allele the pea plant will still express the tall trait.
In this case the dominant allele masks the recessive allele and the pea plant is still tall.
tt - when there are two recessive alleles the pea plant will express the recessive trait and the pea plant is short.
For a recessive trait to show up there should be a pair of recessive alleles.
What else can I help you with?
How do dominant and recessive alleles affect pheno type?
An allele can effect the phenotype of an organism by its dominance or recessiveness. If two dominant alleles are crossed the offsprings will carry the dominant trait of the alleles. If a dominant allele is crossed with recessive allele the phenotype of the offsprings will be of that of the dominant allele. And if two recessive alleles are crossed the phenotype of their offsprings will carry the reccesive trait.
How are dominant and recessive genes related?
Dominate them. Recessive alleles do not show in your phenotype unless you have two of the same recessive allele. But if you inherit one dominant and one recessive, it is the dominant that always shows in your phenotype.
How many dominant alleles must be present in order to show the dominant phenotype?
Only one dominant allele is needed to display the dominant phenotype. Dominant alleles are expressed when present, masking the effect of recessive alleles.
What are alleles that have an effect on an organisms phenotype?
Alleles that have an effect on an organism's phenotype are called dominant alleles. Dominant alleles mask the effects of recessive alleles in heterozygous individuals, resulting in the dominant allele's phenotype being expressed.
What alleles will be expressed in your phenotype?
The alleles that will be expressed in your phenotype are the ones that are dominant and determine your physical traits. These dominant alleles will be visible in your appearance, while recessive alleles may be present in your genetic makeup but not visibly expressed.
How do dominant and recessive alleles affect pheno type?
An allele can effect the phenotype of an organism by its dominance or recessiveness. If two dominant alleles are crossed the offsprings will carry the dominant trait of the alleles. If a dominant allele is crossed with recessive allele the phenotype of the offsprings will be of that of the dominant allele. And if two recessive alleles are crossed the phenotype of their offsprings will carry the reccesive trait.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
How are dominant and recessive genes related?
Dominate them. Recessive alleles do not show in your phenotype unless you have two of the same recessive allele. But if you inherit one dominant and one recessive, it is the dominant that always shows in your phenotype.
How many dominant alleles must be present in order to show the dominant phenotype?
Only one dominant allele is needed to display the dominant phenotype. Dominant alleles are expressed when present, masking the effect of recessive alleles.
Are organisms with alleles BB recessive or dominant?
Organisms with alleles BB are considered homozygous dominant. This means that the dominant allele (B) is expressed in the phenotype. Dominant alleles mask the effects of recessive alleles in heterozygous individuals.
What are alleles that have an effect on an organisms phenotype?
Alleles that have an effect on an organism's phenotype are called dominant alleles. Dominant alleles mask the effects of recessive alleles in heterozygous individuals, resulting in the dominant allele's phenotype being expressed.
What do dominant and recessive alleles have in common?
Alleles are different types of a gene. Each gene controls a characteristic and they is usually a recessive allele and a dominant one. The main similarity is that they both control a certain characteristic!
What alleles will be expressed in your phenotype?
The alleles that will be expressed in your phenotype are the ones that are dominant and determine your physical traits. These dominant alleles will be visible in your appearance, while recessive alleles may be present in your genetic makeup but not visibly expressed.
Why do we call some alleles dominant?
because it dominates the phenotype
How do dominant alleles recessive alleles differs?
Dominant alleles are the ones that show up in the phenotype. Recessive alleles do not unless both alleles are recessive, but can be passed on. For example: Tt , T=tall and t=short. Tall is dominant and short is recessive. You are tall and can pass on the short gene. Or, you can use black hair being dominant over red. Or, brown eyes being dominant over blue. Dominant can be seen on you and recessive can't.
What are alleles and what are the two forms?
Alleles are different versions of a gene that can code for different traits. The two forms of alleles are dominant and recessive. Dominant alleles mask the effects of recessive alleles when present together in an individual's genotype.
The following seed phenotype a showed up in a generation of plants. Which alleles are recessive?
To determine which alleles are recessive in the seed phenotype, you would need to compare the phenotype of the plants with known dominant phenotypes. Typically, if a phenotype appears in a generation that resembles the parents but differs from the dominant traits, those traits associated with the appearance of phenotype "a" are likely recessive. Observing the inheritance patterns in subsequent generations can further clarify which alleles are recessive based on the phenotypes that re-emerge when homozygous recessive individuals are bred.
