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For a dominant trait to be expressed, you either need a RR or an Rr genotype. The other genotype, rr, is recessive only. In genetics, capital letters represent a dominant allele, and lower case letters represent the recessive allele.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoGenotypes are written using letters. When you see a capital letter in a genotype typically it represents a dominant allele. A lower case letter indicates a recessive allele.
Wiki User
∙ 11y agoA genotype is a trait like TT or TT
Wiki User
∙ 13y agoAA or Aa
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In a hybrid individual the trait that is covered and not expressed is the what trait?
recessive
What does dominants mean?
Dominance in genetics means the trait that will express more readily than a recessive trait. A dominant trait can express if only one parent has it.
How can two plants have different genotypes having the same phenotype?
The simplest way that two plants can have different genotypes, but the same phenotype, is if they both have a dominant allele for the same trait. For example, the genotypes Pp and PP, will both produce the phenotype created by P (for example, pink coloured petals). This is because P is dominant to p, and will always be expressed. Other ways that the same phenotype can be created from different genotypes are when the environment affects the traits, or when the trait is controlled by more than one gene.
If a pattern of inheritance for a trait is complete dominance then an organism heterozygous for the trait would normally express?
If a trait is dominant, then an organisms heterozygous (hybrid) for that trait would normally show: A) The recessive trait only B) The dominant trait only C) A blend of the recessive and dominant traits D) A phenotype unlike that of either parent B) The dominant trait only! Reason being because heterozygous means the pair of genes are different. When this occurs, only the dominant trait is expressed.
A dominant phenotype will only be expressed if the individual is homozygous dominant for that trait?
Well actually not necessarily. An individual can be homozygous or heterozygous dominant for a trait. As long as they have that dominant allele in that specific genetic trait, they will automatically express the dominant phenotype. If a person is homozygous dominant, it just means that they will pass on both dominant traits to the offspring. If a person is heterozygous dominant , it means that they will pass on both a dominant and recessive trait to their offspring.Hope that helps ! =D
Would the genotypes AA and AA express a dominant trait?
yes.
What genotypes covers up other traits?
dominant trait
In a hybrid individual the trait that is covered and not expressed is the what trait?
recessive
A plant can have either wide (W) or narrow (w) leaves. Wide leaves are the dominant trait. Which of the following genotypes will lead to a recessive phenotype?
Ww
What are the possible genotypes for dwarfism?
There are many types of dwarfism. Acondroplastic dwarfism is a dominant trait. Living individuals are heterozygous for the trait as a homozygous dominant individuals have substantial skeletal anomalies that result in death in infancy.
What does dominants mean?
Dominance in genetics means the trait that will express more readily than a recessive trait. A dominant trait can express if only one parent has it.
Is Aa and AA a dominant phenotype?
Yes, both Aa and AA genotypes represent the dominant phenotype for a specific trait. The presence of at least one dominant allele (A) will result in the dominant phenotype being expressed.
How can two plants have different genotypes having the same phenotype?
The simplest way that two plants can have different genotypes, but the same phenotype, is if they both have a dominant allele for the same trait. For example, the genotypes Pp and PP, will both produce the phenotype created by P (for example, pink coloured petals). This is because P is dominant to p, and will always be expressed. Other ways that the same phenotype can be created from different genotypes are when the environment affects the traits, or when the trait is controlled by more than one gene.
What is the outward appearance of the trait called?
In genetics, the phenotype represents the physical characteristic/trait. For example brown eyes is a phenotype. When referring to alleles which are alternative forms of a gene, it is the dominant allele that is represented physically. For example if brown eyes are a dominant trait, then they would be represented physically in the genotypes BB and Bb.
What gene is masked if it is paired with a dominant gene?
The different forms of a gene are called alleles. In Mendelian genetics, a gene has a dominant allele and a recessive allele. The dominant allele masks the recessive allele if present. So there are two possible dominant genotypes: homozygous dominant, in which both dominant alleles are present; and heterozygous, in which one allele is dominant and the other allele is recessive. The only way to express a recessive trait is to have the homozygous recessive genotype.
If a pattern of inheritance for a trait is complete dominance then an organism heterozygous for the trait would normally express?
If a trait is dominant, then an organisms heterozygous (hybrid) for that trait would normally show: A) The recessive trait only B) The dominant trait only C) A blend of the recessive and dominant traits D) A phenotype unlike that of either parent B) The dominant trait only! Reason being because heterozygous means the pair of genes are different. When this occurs, only the dominant trait is expressed.
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).
