Homozygous purelines in cattle can be obtained by
- mating of related individuals of same breed
- mating of unrelated individuals of same breed
- mating of individuals of different breed
- mating of individuals of different species
The Correct Option is A
Solution and Explanation
Top Questions on Principles of Inheritance and Variation
- The inheritance of the AB blood group in humans is an example of -
- CUET (UG) - 2025
- Agriculture
- Principles of Inheritance and Variation
1. Perform a cross between two sickle cell carriers. What ratio is obtained between carrier, disease free and diseased individuals in F1 progeny? Name the nitrogenous base substituted, in the haemoglobin molecule in this disease.
2. Explain the difference in inheritance pattern of flower colour in garden pea plant and snap-dragon plant with the help of monohybrid crosses.
OR,
Explain with the help of well-labelled diagrams how lac operon operates in E. coli :
1. In presence of an inducer.
2. In absence of an inducer.- CBSE CLASS XII - 2025
- Biology
- Principles of Inheritance and Variation
Study the pedigree chart given below, showing the inheritance pattern of blood group in a family:
Answer the following questions:
(a) Give the possible genotypes of individual 1 and 2.
(b) Which antigen or antigens will be present on the plasma membranes of the R.B.Cs of individuals ‘5’ and ‘8’?- CBSE CLASS XII - 2025
- Biology
- Principles of Inheritance and Variation
The sequence of nitrogenous bases in a segment of a coding strand of DNA is
5' – AATGCTAGGCAC – 3'. Choose the option that shows the correct sequence of nitrogenous bases in the mRNA transcribed by the DNA.- CBSE CLASS XII - 2025
- Biology
- Principles of Inheritance and Variation
- A man whose father was colour-blind marries a woman who had a colour-blind mother and normal father. What percentage of male children of this couple will be colour-blind?
- CBSE CLASS XII - 2025
- Biology
- Principles of Inheritance and Variation
Questions Asked in NEET exam
The output (Y) of the given logic implementation is similar to the output of an/a …………. gate.
- NEET (UG) - 2025
- Logic gates
- A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is:
- NEET (UG) - 2025
- Displacement Current
What is Microalbuminuria ?
- NEET (UG) - 2025
- Human physiology
In the above represented plasmid an alien piece of DNA is inserted at the EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?
- NEET (UG) - 2025
- Genetic Engineering and Biotechnology
- Polymerase chain reaction (PCR) amplifies DNA following the equation.