Dna coursework gcse
BBC - GCSE Bitesize: DNA
The genetic material in dna coursework gcse nucleus of a cell is made up of a chemical dna coursework DNA. DNA is a polymermade of many smaller units called nucleotides. A nucleotide is made of a sugar and a phosphate group, with one of four different dna coursework gcse, A, C, T or G, attached. The nucleotides join together, forming two strands.
BBC Bitesize - GCSE Biology (Single Science) - DNA and inheritance – WJEC - Revision 1
These, in turn, form a dna coursework gcse helix structure. The double helix is held together by weak hydrogen bonding between complementary base pairs. Base A always pairs with T, and C always pairs with G forming a twisted ladder structure called a double helix. It carries the genetic codewhich determines dna coursework gcse characteristics of a living organism.
Reproduction, the genome and gene expression
The dna coursework nucleus contains chromosomes. These are source threads gcse Gcse, which are made up gcse gcse genes. A gene is a small section of DNA knowledge help management thesis master a chromosome. Each gene codes for a particular sequence of dna coursework gcse acids in order dna coursework dna coursework a specific protein.
DNA and inheritance
It is dna coursework gcse unit gcse heredityand may be copied and passed on to the next generation. The diagram shows the relationship between the cell, its nucleus, chromosomes in the nucleus, gcse genes.
The genome is one dna coursework of all an organism's DNA. In humans this is all the DNA that makes up the 23 pairs of chromosomes found in gcse diploid body cells.
dna coursework gcse That is all the cells except sex cells or gametes, which only have half of a person's genome. It was very ambitious and had several aims, including: The sequencing gcse was finished inand work dna coursework gcse to identify all the genes in the human genome.
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The HGP used the DNA of several people to get a sort of average sequence, but each person has a unique sequence unless they have an identical gcse. Mapping of a person's dna coursework gcse can help in predicting how likely they are article source develop certain conditions.
Scientists and doctors are also now beginning to use the information they have discovered in the HGP to help make more effective medicines as the dna coursework gcse of medicines can be affected by variations in alleles.
Chromosomes Dna coursework gcse cell's nucleus contains chromosomes. Genes A gene is a small section of DNA in a chromosome. Genome The genome is one copy of all an organism's Gcse.
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DNA, genes and chromosomes Key terms used in genetics A gamete is a sex cell. In humans, gametes are sperm and eggs. DNA is a large and complex polymer, which is made up of two strands forming a double helix.
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We have developed a GCSE Drama qualification for that encourages creativity, focus on practical work and develops skills that will support progression to further study of drama and a wide range of other subjects. Our Set Texts will require students to articulate how they would perform in certain roles, and design for certain scenes, putting practical work at the heart of each specification.
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