The 'central dogma' of molecular biology states that information flows: MCQ with Answer and Explanation

Explanation:
The Emerson enhancement effect, discovered by Robert Emerson in 1957, provided crucial evidence for the existence of two distinct photosystems (PSI and PSII) in photosynthesis. He observed that the rate of photosynthesis (measured by oxygen evolution) under far-red light (>680 nm) alone was very low. However, when far-red light was combined with shorter wavelength red light (

Explanation:
Codominance occurs when two different alleles of a gene are fully and equally expressed in the heterozygous condition. In the ABO blood group, the IA and IB alleles are codominant. An individual with the genotype IAIB produces both A and B antigens on the surface of their red blood cells, resulting in the AB blood type. While the ABO system also involves multiple alleles (IA, IB, i), the specific expression of both antigens is codominance.

Explanation:
The jejunum, with its long villi and microvilli, is the primary site for absorption of digested nutrients. The ileum also absorbs vitamin B₁₂ and bile salts.