What is Histone?
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Solution and Explanation
Step 1: Understanding Histone.
Histones are a group of basic proteins found in the nuclei of eukaryotic cells. They play a critical role in the packaging of DNA into structural units called nucleosomes. Histones help in the regulation of gene expression by enabling or inhibiting the accessibility of DNA to the transcription machinery.
Step 2: Conclusion.
Thus, histones are proteins that assist in DNA packaging and gene regulation.
Top MPBSE Class XII Board Biology Questions
Fill in the blanks:
(i) Apple is an example of \(\underline{\hspace{2cm}}\) fruit.
(ii) Occurrence of more than one embryos in a seed is called \(\underline{\hspace{2cm}}\) .
(iii) The inner glandular layer of uterus is called \(\underline{\hspace{2cm}}\) .
(iv) Fertilization is taken place in \(\underline{\hspace{2cm}}\) .
(v) \(\underline{\hspace{2cm}}\) conducted hybridization experiments on garden peas for Seven years.
(vi) Natural \(\underline{\hspace{2cm}}\) are obtained from the inflorescences of the plant Cannabis sativa.
(vii) Pyramid of energy is always \(\underline{\hspace{2cm}}\) .
Write answer in one word / one sentence:
(i) Write name of any one autoimmune disease.
(ii) What is the conformities test of Typhoid?
(iii) The number of deaths in the population during the given period. What does it called?
(iv) Write the name of one 'Hotspot' of India.
(v) What is molecular scissors?
(vi) Write the name of first transgenic cow.
(vii) What is the name of the process of copying genetic information of one strand of DNA to RNA?
- Who gave the chromosomal theory of inheritance?
- Bt poison is formed by:
- Inactive state of embryo is:
Top MPBSE Class XII Board Genetics and Evolution Questions
- Who gave the chromosomal theory of inheritance?
- Which nitrogenous bases are found in RNA?
- What is Pedigree analysis?
- Write down differences between homozygous and heterozygous.
- What is test-cross? Show diagrammatic representation of it.
Top MPBSE Class XII Board Questions
- What is the Market Economy?
- What is positive economics analysis?
- What is profit?
- What is average product?
- Write three relationships between total utility and marginal utility.