Final answer:
Genomic imprinting and genetic anticipation involve inhibition based on parental origin. Imprinting is where certain genes are expressed depending on if they come from the mother or father. Anticipation is when a genetic disorder appears earlier or is more severe in each generation.
Step-by-step explanation:
Genomic imprinting and genetic anticipation both involve inhibition based on parental origin. Genomic imprinting is an epigenetic phenomenon where genes are expressed in a parent-of-origin-specific manner. This means that certain genes are 'silenced' or 'imprinted' depending on whether they are inherited from the mother or the father.
Genetic anticipation, on the other hand, involves the appearance of a genetic disorder at an earlier age or with increased severity in successive generations. This is often due to an increase in the number of repeats of certain DNA sequences in the gene across generations.
Understanding the chromosomal basis of inheritance helps explain how genes are transmitted from parents to offspring. It is foundational in proposing scientific questions and addressing ethical, social, or medical issues related to genetic disorders. With advancements in genetic analysis, we can more rapidly understand genetic blueprints and relationships among organisms, improving our knowledge in fields such as evolutionary biology and medicine.