Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.


What is DNA made of? DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

what is the difference between DNA and chromosomes?

The main difference between DNA and chromosome is regarding the role of genes. DNA stands for deoxyribonucleic acid. The DNA is basically made up of cytosine, adenine, thymine and guanine. When these segments are coiled in a form that can be easily duplicated, they are known as chromosomes.

How much DNA is in a chromosome? One chromosome has 2 strands of DNA in a double helix. But the 2 DNA strands in chromosomes are very, very long. One strand of DNA can be very short - much shorter than even a small chromosome. Strands of DNA are made by joining together the 4 DNA bases in strings.

what is the difference between DNA genes and genome?

DNA is the molecule that is the hereditary material in all living cells. Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.

How many grams of DNA is in the human body? One dalton is 1.67 x 10-24grams, so the human genome weighs 3.59 x 10-12 grams (10-12 grams is also known as a picogram). The human genome is 3.3 x 109 bp in length. If all the DNA in a single human cell was placed end to end it would be six feet long.

what are the differences between a strand of DNA genes and a chromosome?

DNA molecules contain the genetic code which is made from a sequence of amino acids. Each gene (short DNA section) contains a code for a specific sequence of amino acids that codes for a specific protein in the body. Chromosomes are made from DNA molecules and are found in the cell nucleus.

Why is DNA so important? DNA is vital for all living beings – even plants. It is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organism's or each cell's development and reproduction and ultimately death.

Is DNA a chromosome?

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

What is the relationship between DNA and genes? Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

How big is a gene?

Most of the genes are relatively small covering a genomic region of about 3 kb. The average gene contains 6.4 coding exons accounting for about 26% of the genome. Most exons are small and separated by small introns. The median size of exons is 123 bases, while the most common size for introns is 47 bases.

What is bigger DNA or gene?

Genes contain DNA (deoxyribonucleic acid). DNA is the chemical basis of heredity. Think of it this way: DNA is in genes, genes are on chromosomes. When "mapping" all genes on all human chromosomes was first seriously conceived, it was called the Human Genome Project - a combination of gene and chromosome.

What do genes code for?

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

How many chromosomes are in a human?

46

What does DNA look like to the human eye?

The DNA will look like a white, cloudy or fine stringy substance. DNA is not visible as a single strand to the naked eye, but when thousands of threads of DNA are present, you will be able to see the large groups of threads of DNA. 5. Is DNA found in all living or once living cells?

What is the shape of DNA?

Basic Structure of DNA The DNA molecule is shaped like a ladder that is twisted into a coiled configuration called a double helix. The nitrogen bases form the rungs of the ladder and are arranged in pairs, which are connected to each other by chemical bonds.

What do you mean by DNA?

DNA. Your DNA is what makes you uniquely you. DNA stands for deoxyribonucleic acid, sometimes called "the molecule of life," as almost all organisms have their genetic material codified as DNA.

How do you identify nucleic acids?

The key to detection of specific nucleic acid sequences is base pairing between complementary strands of RNA or DNA. At high temperatures (e.g., 90 to 100°C), the complementary strands of DNA separate (denature), yielding single-stranded molecules.

How long is your DNA?

If you stretched the DNA in one cell all the way out, it would be about 2m long and all the DNA in all your cells put together would be about twice the diameter of the Solar System.