Latest questions in this category.
Edward’s syndrome is caused by trisomy of chromosome 18, leading to severe developmental issues.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Henking discovered the X-chromosome while studying insect spermatogenesis.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Linkage occurs when genes close to each other on the same chromosome are inherited together.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
A dominant allele is expressed in both homozygous (AA) and heterozygous (Aa) conditions.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Thomas Hunt Morgan worked on Drosophila and discovered linkage and recombination.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Sutton and Boveri proposed the Chromosomal Theory of Inheritance, linking Mendel’s principles to chromosome behavior.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Dominant traits are not necessarily more common; frequency depends on factors like natural selection and genetic drift.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Thomas Hunt Morgan discovered sex-linked inheritance by studying eye color inheritance in Drosophila melanogaster.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Thomas Hunt Morgan’s experiments on Drosophila melanogaster led to the discovery of linkage and recombination.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
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
Linked genes do not always segregate independently; they tend to be inherited together.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
Some genes have more than two alleles, as seen in the ABO blood group system.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Chromosomal Theory Linkage Recombination Gene Mapping
