What determines a trait of an organism?
the number of dominant alleles
its phenotype
the combination of its alleles
the number of copies of the gene
All of the options mentioned can determine a trait of an organism.
- The number of dominant alleles refers to the presence of dominant genes that have the ability to express themselves in the phenotype. Dominant alleles can override the effects of recessive alleles.
- The phenotype refers to the physical characteristics or traits that are expressed by an organism. The expression of genes, both dominant and recessive, contributes to the phenotype.
- The combination of alleles refers to the specific arrangement of genes an organism possesses. This combination can determine the expression of traits.
- The number of copies of a gene can also influence the phenotype. For example, having multiple copies of a gene can result in an increased expression of a specific trait or characteristic.
But I just need one answer
The combination of its alleles determines a trait of an organism.
What statement is accurate about dominant alleles?
they are expressed only when a recessive allele is not present
they result in the trait of shortness in pea plants
they are indicated by lowercase letters
they are expressed whenever present
The statement "they are expressed whenever present" is accurate about dominant alleles. Dominant alleles are expressed and their traits are observed regardless of the presence of recessive alleles.
The trait of an organism is determined by a combination of its alleles.
An allele is a variant form of a gene, which is a specific segment of DNA that codes for a specific protein or RNA molecule. Each individual inherits two copies of each gene, one from each parent. These two copies may be the same or different alleles.
In the case of dominant and recessive alleles, the trait is determined by the presence of dominant alleles. Dominant alleles are expressed in the phenotype of an organism, meaning they influence the physical or observable characteristics of the organism. If an individual has even just one copy of a dominant allele, it will be expressed in their phenotype.
On the other hand, recessive alleles are only expressed in the phenotype if an individual has two copies of the recessive allele. If an individual has one copy of a dominant allele and one copy of a recessive allele, the dominant allele will determine the trait.
So, the combination of alleles an organism inherits from its parents, and whether they are dominant or recessive, determines its traits. The phenotype, which is the physical expression of those alleles, reflects the combination of alleles an organism possesses.