The Building Blocks of Inheritance

How does DNA, Chromosomes and Genes relate?

How does DNA, Chromosomes and Gene Work Together?

The Building Blocks of

Inheritance

DNA (deoxyribonucleic acid) is a bio molecule that holds the blueprint for how living organisms are built. DNA is made out of two long, twisted strands that contain complementary genetic information (like a picture and its negative). A gene is a segment of DNA that is passed down from parents to children and confers a trait to the offspring. Genes are organized and packaged in units called “chromosomes.” Humans have 23 pairs of chromosomes. One set of chromosomes for each pair comes from a person’s mother, and the other set of chromosomes comes from the father.

Gene

By: Jamie, Stefano & Adrian

Is a unit of heredity in a living organism. It is normally a stretch of DNA that codes

for a type of protein or for an RNA chain that has a function in the organism. All proteins and functional RNA chains are specified by genes. All living things depend on genes. Genes hold the information to build and maintain an organism's cells and pass genetic traits to offspring.

Where is DNA found ?

In sexual reproduction, organisms inherit half of their nuclear DNA from the male parent and half from the female parent. However, organisms inherit all of their mitochondrial DNA from the female parent. This occurs because only egg cells, and not sperm cells, keep their mitochondria during fertilization.

Chromosome

Where is Chromosomes found?

Who discovered DNA?

DNA was discovered in 1869. by two Scientist, James Watson and Francis Crick

Is an organized structure of DNA, protein, and RNA found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences.

Bases of a DNA

Chromosomes are structures that contain our genes. The human body is made up of individual units known as cells. Your body has numerous different types of cells, for example the skin cells, liver cells and blood cells. In the middle of most cells is a structure known as the nucleus. This is where chromosomes may be found.

The four types of nitrogen bases found in nucleotides are: adenine (A), , thymine (T), guanine (G) and cytosine (C). The order, or sequence, of these bases determines what biological instructions are contained in a strand of DNA.

What is DNA made of?

What does a Gene do?

What does DNA do?

What is Chromosomes made up of?

(deoxyribonucleic acid)

DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.

DNA

Genes are the working subunits of DNA. Each gene contains a particular set of instructions, usually coding for a particular protein or for a particular function.

A gene is a chemical reading of your body's mix of proteins and amino acids in your DNA (Ribonucleic Acid). A gene doesn't really DO any thing, it really tells you how your going to grow.

Chromosomes are made of a single strand of DNA. There are also some proteins that are bound to this DNA in order to manage it and keep it coiled, these are also sometimes referred to as part of the chromosome.

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Is a molecule that encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses. It is a nucleic acid essential for all known forms of life.