Consider an organism that has a dominant phenotype, is it possible to determine its genotype? explain your answer

Yes, it is possible via testcrossing

Explanation:

The law of dominance has made it possible that a phenotype may be expressed without knowing the actual genotype (allele combination). This occurs when an allele is dominant over another allele (recessive), hence, the dominant phenotype can either be in a heterozygous or purebred state.

However, a way to discover the genotype of an organism that is portraying dominant phenotype is TEST CROSS. Test cross is the crossing of the unknown genotype with a recessive condition (will contain same recessive alleles).

After crossing, the offsprings will be used to determine whether the parent with unknown genotype is heterozygous or not.

- If the offsprings all exhibit the dominant phenotype, the unknown genotype contains the same dominant alleles e.g DD.

- If 50% of the offsprings exhibit a recessive phenotype, the unknown genotype is heterozygous e.g Dd.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.