Question

Read the passage given below and answer the question that follow:

Analysis of the pattern of inheritance of a particular trait through several generations of a family is called pedigree analysis. A graphic representation of the same is called a pedigree chart. It may be used to guess the probability of a child inheriting the trait under study. pedigree chart is drawn by using a standard set of symbols.

A trait which rarely appears in a family’s pedigree chart across four consecutive generations is considered as a ______.

विकल्प

• Dominant trait

• Recessive trait

• Sex-linked trait

• Homozygous trait

Answer 1

A trait which rarely appears in a family’s pedigree chart across four consecutive generations is considered as a recessive trait.

Explanation:

A trait that rarely appears in a family’s pedigree chart across several generations is usually recessive because recessive traits often skip generations, appearing only when an individual inherits two recessive alleles. In contrast, dominant traits tend to appear in every generation. Thus, infrequent appearance in four consecutive generations indicates a recessive inheritance pattern.