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What is a person who has one recessive allele for a trait and one dominant allele for the same trait and is able to pass in the trait on to their offspring?
That is heterozygous. Some scientist call these "hybrids"(no joke)The person is heterozygous for that trait and will have the dominant phenotype.An organism with both a dominant and recessive allele for a specific trait is called an heterozygote. They are heterozygous for this trait.
Why is it that a person with an allele for a particular trait may not have a phenotype that shows the trait?
a dominant allele will express its trait , as well as be carried by the person. the word carrier is commonly used for a person who bears an allele which does not express itself(i.e. a recessive gene).
What is an allele that produce a trait in the heterozygous condition is?
homozygous
A person who has PKU?
inherited the allele for the trait from both parents
What is the difference between dominant and recessive alleles for specific traits?
Dominant is an allele that will always be expressed in a heterozygous individual. Recessive on other hand are traits that will only be expressed in a homozygous condition. Organisms receive one allele for each trait from each parent, thus you have two alleles for each trait.
How does allel cause a trait an organism?
The allele causes a certain type of protein to form
Is an allele a trait that determines a specific characteristic in an organism?
Yes, an allele is a variant form of a gene that determines a specific characteristic or trait in an organism.
Which is the dominant allele?
The dominant allele is the trait that shows up in the organism when the allele is present
How does an allele trait in an organism?
An allele causes a trait by either being dominant orrecessive or example, allele A will occur over allele a because it is dominant.
When is the only time a recessive trait appears on a organism?
A recessive trait only appears in an organism when it is homozygous for that trait, meaning it has two copies of the recessive allele. This occurs when an organism inherits the recessive allele from both parents.
Organisms that has two different alleles for a trait?
An organism with two different alleles for a trait is said to be heterozygous for that trait. This means that it has one dominant allele and one recessive allele. The dominant allele will usually determine the organism's phenotype for that trait.
How can an organism have two different alleles for one trait but show one observable trait?
One allele would be dominant and the second allele would be recessive, so the organism would show only the dominant trait.
If a trait made an organism less likely to survive and reproduce what would happen to the allele for the trait?
The allele would not be passed on to further generations, as the organism cannot reproduce. There would be a smaller population of that organism who's genetic code does not contain the allele for that particular trait.
An organism carrying one dominant and one recessive allele for particular trait would be for that trait?
Heterozygous.
When an organism is carrying one dominant and one recessive allele for a particular trait what would be that trait?
Heterozygous
Is it true that an organism with a dominant allele for a particular form of a trait only exhibits the trait sometimes?
true
How does a dominant trait affect the phenotype of an organism?
If the the trait is controlled by only one allele and the allele is completely dominant then once inherited the offspring with exhibit that phenotype
