Final answer:
Yes, some aberrant alterations can be fixed in their infancy. Chromosomal abnormalities can occur during DNA replication or recombination, leading to problematic phenotypic effects. However, there are mechanisms in place to repair DNA errors, and medical advances allow for early detection and intervention.
Step-by-step explanation:
Yes, some aberrant alterations can be fixed in their infancy. Chromosomal abnormalities, such as deletions, duplications, inversions, and translocations, can occur during DNA replication or recombination. These abnormalities can lead to problematic phenotypic effects.
However, there are mechanisms in place to repair DNA errors. Cells have repair systems, such as DNA mismatch repair and nucleotide excision repair, which help fix errors in DNA sequence.
Additionally, medical advances allow for diagnostic testing to detect many chromosomal disorders in individuals before birth, providing the opportunity for early intervention and treatment.