Recessive alleles must be homozygous in order for the trait to be displayed phenotypically.
organism
In some cases but not others. Certain alleles can be dominant, which means that they will dictate the phenotype should there be a clash of alleles in the genotype. Other alleles can be recessive, which means you'd need both of these alleles in these genotype in order for it to dictate the phenotype. This means that if a person's phenotype represents a dominant trait, we cannot be certain what their genotype is. If, however, it represents a recessive trait, we know that their genotype must be the recessive allele twice.
Phenotype, This is the "outward, physical manifestation" of the organism Genotype, This is the "internally coded, inheritable information"
Those would be called co-dominant alleles.
The actual gene makeup of an organism is its genotype. It refers to the specific set of genes an organism carries in its DNA. This includes both the genes that are expressed (phenotype) and those that are not.
The genes that make each individual unique are filed into a persons phenotype and genotype. These traits are different from those around them.
Phenotypes are the physical characteristics resulting from an individual's genotype, which is their genetic makeup. Natural selection acts on phenotypes by favoring traits that confer a reproductive advantage, leading to the increased frequency of the corresponding genotypes in a population over time. This process drives the evolution of populations by selecting for genetic variations that enhance an individual's survival and reproductive success.
In some cases but not others. Certain alleles can be dominant, which means that they will dictate the phenotype should there be a clash of alleles in the genotype. Other alleles can be recessive, which means you'd need both of these alleles in these genotype in order for it to dictate the phenotype. This means that if a person's phenotype represents a dominant trait, we cannot be certain what their genotype is. If, however, it represents a recessive trait, we know that their genotype must be the recessive allele twice.
Those would be called co-dominant alleles.
complete dominace
complete dominance
True
complete dominance
complete dominance
Complete Dominance
There are three alleles for blood type which can be represented by IA, IB, and i. A person with blood type O has the genotype ii. A person with blood type AB has genotype IAIB. If these two people produce children, those children will inherit one allele from each parent. They will therefore certainly inherit the i allele from their mother and either the IA or the IB from their father. The children with the genotype IAi will have type A blood, since the IA allele is dominant to the i allele. The children with the genotype IBi will have type B blood, since the IB allele is also dominant to the i allele.
If we assume complete dominance of the white flower trait and use a Punnett square for a heterozygous cross (Rr x Rr), we would expect approximately 3 out of 4 offspring (or 75%) to have white flowers and 1 out of 4 offspring (or 25%) to have red flowers.
Because those alleles segregate, or seperate, and combine again to make different alleles, thus making different phenotypes.