46 public questions tagged with this topic.
Mutations are random changes in the genetic material that lead to the formation of new alleles in a population.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Mechanism of Evolution - Hardy-Weinberg and Natural Selection
Stabilizing selection favors intermediate traits, reducing variation and maintaining the status quo in a population.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Origin of Life - Theories Miller Urey Experiment
Not all mutations are harmful; some are neutral, beneficial, or silent, meaning they do not change the protein sequence.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Human Genome Project and DNA Fingerprinting
Recombination during meiosis is a major source of genetic variation along with mutation and gene flow.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
In multiple allelism, a gene has more than two possible alleles in a population, but each individual inherits only two.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Monohybrid Dihybrid and Test Cross
Crossing over during meiosis increases genetic diversity by exchanging genetic material between homologous chromosomes.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Monohybrid Dihybrid and Test Cross
Crossing over during meiosis exchanges genetic material between homologous chromosomes, increasing genetic diversity.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Monohybrid Dihybrid and Test Cross
Aneuploidy is caused by nondisjunction, where chromosomes fail to separate properly during meiosis.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Meiosis produces genetically varied cells due to crossing over and independent assortment, not identical ones.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Meiosis - Meiosis II and Significance - Genetic Variability
Meiosis produces genetically varied cells due to crossing over and independent assortment, not identical ones.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Meiosis - Meiosis II and Significance - Genetic Variability
Meiosis introduces genetic variation through crossing over during prophase I and independent assortment during metaphase I.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Meiosis - Meiosis II and Significance - Genetic Variability
Meiosis produces genetically varied cells due to crossing over and independent assortment, not identical ones.
Ref: NCERT Class 11 Biology Chapter 10: Cell Cycle and Cell Division Meiosis - Meiosis I - Leptotene Zygotene Pachytene Diplotene Diakinesis
