Despite a high mutation rate and maternal inheritance, mitochondrial genomes remain remarkably stable across generations. This Review explores how the mitochondrial bottleneck and purifying selection shape mitochondrial DNA inheritance and examines the mechanisms that limit the transmission of deleterious variants.

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Nature Reviews Genetics, Published online: 05 October 2026; doi:10.1038/s41576-026-01019-0Despite a high mutation rate and maternal inheritance, mitochondrial genomes remain remarkably stable across generations. This Review explores how the mitochondrial bottleneck and purifying selection shape mitochondrial DNA inheritance and examines the mechanisms that limit the transmission of deleterious variants.

Series: The Brokencap Academic Masterclass Series (Day 1 of 4) Target Audience: NEET-UG Medical Aspirants and Pre-Medical Scholars Publisher: The Brokencap Coaching Institute, Gorakhpur 1. Introduction to Molecular Genetics In competitive medical entrance examinations, Molecular Genetics is not merely a high-weightage topic; it represents the conceptual bedrock of modern medicine, recombinant biotechnology, and clinical therapeutics. Consistently yielding 8 to 10 direct questions in NEET-UG, mastering nucleic acid chemistry, enzymatic cascades, and regulatory circuits at an atomic and mechanistic level separates top-rankers from average scorers. This masterclass deconstructs the double helix architecture, nucleosomal packaging, high-fidelity DNA replication, transcriptional mechanics, genetic code translation, and the classical operon models of gene regulation.

As a rare form of dementia claims one sibling after another, a journalist captures the profound costs of caregiving

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. Explore symptoms, inheritance, genetics of this condition.

Roxanne Khamsi’s “Beyond Inheritance” offers a fresh look at genetics.

Mendel is known as the father of genetics because of his ground-breaking work on inheritance in pea plants 150 years ago. Gregor Johann Mendel was a monk and teacher with interests in astronomy and...