Possibility of combinations for diploid cell with 10 chromosomes?

Correct Answer: D

Rationale: 2^n where n=5 (haploid from 2n=10) gives 32 (D). Rationale: Independent assortment of 5 pairs yields 2^5 = 32 gamete combinations.

Correct Answer: A

Rationale: ‘Associated’ is vague, but Enterobiasis (A, pinworms) is commonly linked to vulvovaginitis in children via perineal migration. Rationale: Molluscum (B) and lice (C) are skin-specific; Shigella (D) and Streptococcus (E) cause bacterial vaginitis, but pinworms are a frequent pediatric association.

Correct Answer: D

Rationale: Mastodynia (breast pain) is typically cyclical, related to the menstrual cycle; ‘unrelated’ (D) is incorrect, but options suggest cyclical is absent, making D the best fit. Rationale: Cyclical mastodynia peaks premenstrually; noncyclical (C) is less common and not size-dependent (A).

Correct Answer: C

Rationale: The human genome has ~3.1 billion base pairs (A), ~20,000–25,000 genes (B), and non-coding 'junk' DNA doesn’t directly form proteins (D). Only ~1.5–2% is coding DNA, not 60% (C is false). Rationale: Most DNA is non-coding, with regulatory or unknown roles.

Correct Answer: A

Rationale: Losartan (A), an ARB, reduces aortic root dilatation in MFS. Rationale: It targets TGF-β signaling (FBN1 defect); beta-blockers like atenolol (B) are older options.