What determines a tray of organisms the number of dominant alleys, a phenotype a combination of its alleys, a number of copies of the gene
The number of dominant alleles, the phenotype, and the number of copies of a gene are determined by the genetic makeup of the organisms.
1. Number of Dominant Alleles: A dominant allele is a variant of a gene that exerts its effect on the phenotype even if only one copy is present. The number of dominant alleles is determined by the specific genes present in an organism's genome. Each gene can have multiple alleles, and the number of dominant alleles for a trait will depend on the specific alleles inherited.
2. Phenotype: A phenotype is the observable physical or functional characteristics of an organism, which are determined by the interaction of genes with environmental factors. It is a combination of the alleles inherited for a particular trait. The specific combination of alleles, both dominant and recessive, influences the phenotype exhibited by the organism.
3. Number of Copies of a Gene: The number of copies of a gene, or the gene dosage, refers to the number of times a particular gene is present in an organism's genome. In diploid organisms, which have two copies of each chromosome, the number of copies of a gene will generally be two. However, certain organisms may have additional copies of certain genes due to gene duplication events or variations in their genome structure.
It is important to note that these factors interact with each other and with environmental influences to collectively determine the traits and characteristics of organisms. Additionally, genetic expression and regulation mechanisms can further modulate the effects of these factors in shaping the phenotype of an organism.