S1 Science Biological Sciences

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Presentation transcript:

S1 Science Biological Sciences DNA S1 Science Biological Sciences

Learning outcomes Success criteria Understand the role of the nucleus in controlling the cell. State what “DNA” is. State where DNA is found in a cell. State what a “gene” is. State what a “chromosomes” are. Describe three ways in which the chromosomes of one organism might differ from another.

DNA DNA contains the genetic instructions which control the development and function of all known organisms. DNA is found in the nucleus of a cell.

Gene A gene is a section of DNA which controls an inherited characteristic e.g. eye colour, size of your feet, left or right handed, skin colour

Chromosome A chromosome is a single piece of coiled DNA containing many genes. Different organisms have different numbers of chromosomes in their cells.

Different organisms Different organisms have different: numbers of chromosomes sizes of chromosomes alleles (forms) of gene on chromosomes

Learning outcomes Success criteria Understand the role of the nucleus in controlling the cell. State what “DNA” is. State where DNA is found in a cell. State what a “gene” is. State what a “chromosomes” are. Describe three ways in which the chromosomes of one organism might differ from another.