Biology for IGCSE & O level - Inheritance (Section 7 - No. 8)
Which statements are true about recessive alleles?
Recessive alleles are only expressed when two copies are present.
Recessive alleles are always masked by dominant alleles.
Recessive alleles always have an effect on the phenotype.
Recessive alleles are usually represented by a lowercase letter.
توضيح
Recessive alleles are only expressed when two copies are present and are denoted by lowercase letters.