Youtube video to go along with the worksheet is included in the powerpoint the last three questions need to be researched by pupils themselves works well with a class motivated to research as you can then get them to make a poster/leaflet based on what. A gene is the basic physical and functional unit of heredity genes are made up of dna some genes act as instructions to make molecules called proteins however, many genes do not code for proteinsin humans, genes vary in size from a few hundred dna bases to more than 2 million bases. Genes occur in a linear sequence along a chromosome and a single chromosome may contain hundreds of genes because chromosomes occur in pairs, genes also occur in pairs an inherited trait is determined by at least one pair of genes.
Genes are packaged in bundles called chromosomes humans have 23 pairs of chromosomes, resulting in 46 individual chromosomes of those pairs, one pair, the x and y chromosome, determines whether you are male or female, plus some other body characteristics. Chromosomes are further organized into short segments of dna called genes if you imagine your dna as a cookbook, then your genes are the recipes written in the dna alphabet - a, t, c, and g - the recipes tell your cells how to function and what traits to express. A dna sequence that instructs a cell to make a protein is called a gene in animal, fungal and plant cells, dna is stored in the nucleus it is packaged up into chromosomes because there is so. That means a chromosome is simply a coiled up, long section of dna each chromosome contains thousands of genes a gene is a specific number of base pairs that codes for a trait.
Dna chromosomes and genes are very closely related explanation: chromosomes are structures within the nucleus of eukaryotic cells that can be observed as distinct entities at a particular stage of a cell's cycle. Genes are sequences of dna that contain info to make proteins genes are sequences that actually mean something all genes are dna, but not all dna is a gene because there are random letters in between the codes. Some chromosomes are longer than others because they contain more dna humans have about 30,000 genes in their 46 chromosomes the word chromosome comes from the greek words chroma, meaning color, and soma, meaning body. Genes the dna making up each chromosome is usually coiled up tightly if we imagine it stretched out, it would look like beads on a string (figure 13): each of these beads is called a gene each gene is an instruction for a specific protein thousands of genes make up each.
The dna is like an instruction booklet that determines the traits you are likely to get the entire dna in a human body is packaged in the form of chromosomes. Genes are sections of dna, whereas chromosomes are the structures that dna folds into before cell division each human somatic cell contains 23 pairs of chromosomes all of the genes that code for the creation, growth, and development of a human person are found in these chromosomes. Gene is a segment of dna on the chromosome that codes for a functional protein and rnas like trna, rrna or ribozymes’ chromosome is the structure formed by the condensation of chromatin during cell division.
Well, the dna strands packaged as chromosomes are divided into ‘segments’ called genes genes contain recipes to make proteins inside the cells not all regions of dna inside the cell are part of genes. Despite chromosomes having a large number of genes, those genes are arranged in a very specific sequence each gene has a special place within a chromosome, which is called its locus most cells in the human body have 23 pairs of chromosomes, with the exception of a few cells like red blood cells, egg cells and sperm. What are genes chromosomes contain smaller units of genetic material called dna dna is a sequence of letters that spell out the genetic code the dna is organized into words and sentences called genes humans have approximately 20,000 genes and each one influences a part of development these genes usually come in pairs.
Created for year 11 students who need to work on the very basics of genetics. Chromosomes contain proteins as well as dna, and it was initially thought that genes were proteins the first evidence leading to the identification of dna as the genetic material came from studies in bacteria. In other words, at the same location or “gene locus” on each homologous chromosome is the gene for a certain trait, such as eye color because each homologous chromosome comes from a different parent, however, the alleles, or versions of the gene , can be different.
Chromosomes got their name from the first lab experiments in the 1880s that revealed chromosomes could be easily stained with dyes, thus making studying them easier a gene is located on a chromosome. The chromosome is one long coiled dna molecule which has genes dotted along its length the genetic material of each cell is packaged together in the nucleus as chromosomes and each one of these contains very long dna molecules. Difference between dna, genes and chromosomes dna is the hereditary material in all living organisms, which contains the instructions needed by an organism to develop, live and reproduce chromosomes are threadlike structures made up of dna that carry information for each and every characteristic individual possesses. 23 each chromosome has within it, arranged end-to-end, hundreds or thousands of genes (see figure 3),  each with a specific location, consisting of the inherited genetic material known as dna some chromosomes are significantly larger than others, and some are more densely packed with genes.