Topic 12 SEHS Genetics HL
Terms in this set (11)
Role of genes in inheritance of human characteristics
-Chromosomes are made up of DNA
-Section of DNA is referred to as genes
-DNA undergoes replication as part of cell devision to pass on genes to new cells
-Children inherit their genes from their parents
-Millions of combination of genes are possible from parents
-Human characteristics are determined by their genes
-Some characteristics are expressed straight away while others require an environmental switch
An organism's physical appearance, or visible traits.
genetic makeup of an organism
How genes can influence human characteristics
-Genes are code for the production of proteins and building of new cells
-Genes can be switched on and off due to internal and external factors. This can result in changes in a persons athletic performance over their lifetime.
-Multiple genes determine characteristics so unlikely there being a single gene that enhances athletic performance
Athletic characteristics influenced by genes
-Muscle fibre type
Environmental factors that affect performance
The likelihood of of obtaining a performance level with a genetically controlled ceiling
It is not possible to???
ascertain the relative contribution of genetics or training to elite sporting performance. The contribution of each is likely to differ for different sports.
Implications of genetic screening for sports, exercise and health
-Identify life threatening conditions (cardiac death, connective tissue disorder)
-Predict susceptibility to injury so can improve safety
-Ethical implications that could discriminate people from one or more sports
-Ethical implications that could result in unemployment
-Possibility of gene doping to improve performance