Explores Gregor Mendel's foundational laws of inheritance, including dominance, segregation of alleles, and independent assortment of genes. Practice questions help test comprehension of these genetic principles.
Linked genes do not follow the Law of Independent Assortment because they are inherited together unless crossing over occurs.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Linkage occurs when genes located close together on the same chromosome tend to be inherited together.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Mendel chose pea plants because they have a short life cycle and well-defined contrasting traits.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
The XIST gene is responsible for X chromosome inactivation in female mammals.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
The Hardy-Weinberg Principle states that allele frequencies remain constant unless affected by evolutionary forces.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
The Law of Independent Assortment states that alleles of different genes segregate independently during gamete formation.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
The principle of segregation states that two alleles for a trait separate during gamete formation and recombine during fertilization.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Sickle-cell anemia is caused by a single base substitution in the β-globin gene, leading to the replacement of glutamic acid with valine.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Incomplete dominance results in an intermediate phenotype, as seen in pink flowers from red and white parents.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Linked genes do not follow the Law of Independent Assortment as they are inherited together unless crossing over occurs.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
Pleiotropy occurs when a single gene influences multiple phenotypic traits, such as in sickle-cell anemia.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
The chromosomal theory of inheritance was based on Mendel’s work on pea plants, not fruit flies.
Ref: NCERT Class 12 Biology Chapter 4: Principles of Inheritance and Variation Mendel's Laws - Dominance Segregation Independent Assortment
