Biology for IGCSE & O level - Inheritance (Section 11 - No. 14)
Which of the following scenarios could result in the formation of a new allele?
A change in DNA sequence.
A change in the environment.
Crossing over during meiosis.
A deletion or insertion of a nucleotide.
คำอธิบาย
Mutations or alterations in the DNA sequence lead to new alleles.