Given is a diagram of a double helical structure of DNA: Name the four nitrogenous base that form a DNA molecule.

Adenine, guanine, thymine, and cytosine are the four nitrogenous bases forming a DNA structure. The arrangement of DNA structure is such that sugar and phosphate units form the backbone of the polynucleotide chains and the paired nitrogenous bases form the centre.

Given is a diagram of a double-helical structure of DNA: Give the full form of DNA.

The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. DNA stands for Deoxyribonucleic Acid. At the most basic level, DNA is composed of a series of smaller molecules called nucleotides. In turn, each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar molecule. There are four different DNA nucleotides, each defined by a specific nitrogenous base: adenine, thymine, guanine, and cytosine.

Given is a diagram of a double-helical structure of DNA: Name of the unit of heredity.

The gene is the basic functional and physical unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify traits. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.

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ICSE Biology Book 2 for Class 10>Basic Biology>Chapter 2 - Structure of Chromosome>Solved Questions from ICSE Board Examination Papers

Sarita Aggarwal Solutions for Exercise 2: Solved Questions from ICSE Board Examination Papers

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Sarita Aggarwal Biology Solutions for Exercise - Sarita Aggarwal Solutions for Exercise 2: Solved Questions from ICSE Board Examination Papers

Attempt the practice questions from Exercise 2: Solved Questions from ICSE Board Examination Papers with hints and solutions to strengthen your understanding. ICSE Biology Book 2 for Class 10 solutions are prepared by Experienced Embibe Experts.