Diploid organisms, like humans, have two alleles at each genetic locus, or position, and one allele is inherited from each parent. … This means that the genotype of an organism with a dominant phenotype may be either homozygous or heterozygous for the dominant allele.
What is the phenotype if the genotype is heterozygous?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. … Of these three genotypes, only bb, the homozygous recessive genotype, will produce a phenotype of blue eyes.
Will a heterozygous genotype show the dominant or recessive phenotype?
Mendel observed that a heterozygote offspring can show the same phenotype as the parent homozygote, so he concluded that there were some traits that dominated over other inherited traits. However, the relationship of genotype to phenotype is rarely as simple as the dominant and recessive patterns described by Mendel.
Is AA a heterozygous genotype?
A heterozygous individual is someone who has two different alleles at a locus. For instance, using the sickle cell example, a heterozygous individual might have a genotype of AS. … The genotype for a homozygous individual might be AA or SS.
What are the 3 types of genotypes?
There are three types of genotypes: homozygous dominant, homozygous recessive, and hetrozygous.
What is phenotype example?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
What is the probability that an offspring will have a homozygous recessive genotype?
If two heterozygotes are crossed, the probability that an offspring will be homozygous recessive is 25% or 0.25.