The sickle cell anaemia is a

The correct answer is Option (2) → Autosomal recessive disease

Option (2) Autosomal recessive disease — Correct. Sickle-cell anaemia is an autosome linked recessive trait, passed from parents to offspring when both partners are carriers. The gene lies on an autosome, not on a sex chromosome.

Note: A similar question was also asked in CUET (UG) 2023 on 22-05-2023 (Slot 1).

NCERT Extract:
Mendelian Disorders – “… Sickle-cell anaemia : This is an autosome linked recessive trait that can be transmitted from parents to the offspring when both the partners are carrier for the gene (or heterozygous). The disease is controlled by a single pair of allele, HbA and HbS. Out of the three possible genotypes only homozygous individuals for HbS (HbSHbS) show the diseased phenotype.”