Presentation on theme: "Inherited characteristics"— Presentation transcript:
1Inherited characteristics Human TraitsInherited characteristics
2What if aliens visited our planet and thought that all humans are alike…. Are we?We are certainly different than plants or fungus!
3Are they more alike than different? Or...more different than alike? Humans are much more similar to each other than to plants, fungus, etc.Are they more alike than different?Or...more different than alike?
4Inherited human traits Parent organisms pass traits to their offspring so there are often similar characteristics seen in both parent and offspring.Inherited human traits include:Ability to roll your tongue or notAttached or unattached earlobesDimples or frecklesNaturally curly or straight hairHitchhiker’s or straight thumbColor-blindness or normal color visionWidow’s peak or straight hairlineColor of skin and hairCleft or smooth chinSome of these traits are not just “dominant” or “recessive”
5Inventory of my traits What traits did I inherit? Watch the following slides to determine YOUR traits – complete the “Inventory worksheet”
18FrequencyThe rate of frequency is a statistical term that helps scientists determine how often an inherited trait occurs.Frequency is important in discovering how much of the population differs (or is similar) from the whole.Frequency = Number Observed/Total Population X 100Population predictions can be made if frequencies of characteristics are known (e.g., susceptibility to flu)Frequency can be used to predict evolutionary changes to environmental changes