Making the Selection Student Worksheet – Define Selective Breeding: The selection of certain seeds or animals for reproduction so that the next generation has the same desirable traits. Define Hybrid Vigor, and give an example: Hybrid Vigor- desirable characteristics that give the organisms a competitive edge over the parent organism Example: A chicken that grows larger than its parents, (many possible examples). Complete the Chart: Selection: Definition: Natural Selection Organisms and species that survive and reproduce are the sole ancestors to the next generation. There is no human intrusion. Selective Breeding Selection of animals or seeds for reproduction based on desired traits. This selection happens because of human selection, it is not natural Define Inbreeding: Inbreeding is the continued breeding of individuals with similar characteristics in order to maintain the desired characteristics in a line of organisms. What is the consequence of inbreeding? Give an example. Inbreeding depression, or the increased chance that a cross between two individuals will bring together two recessive alleles for a genetic defect. Ex: Deafness in Dalmatians. Name two consequences of selective breeding. Loss of variety in the population Can amplify undesired traits unintentionally What is one reason that the Irish Potato Famine was so devastating? There was no diversity in the Irish potato crop, all potatoes were the same so the fungus was able to wipe out all the potatoes.
Making the Selection – Student Worksheet Define Selective Breeding: The selection of certain seeds or animals for reproduction so that the next generation has the same desirable traits. Define Hybrid Vigor, and give an example: Hybrid Vigor- desirable characteristics that give the organisms a competitive edge over the parent organism Example: A chicken that grows larger than its parents, (many possible examples). Complete the Chart: Selection: Definition: Natural Selection Organisms and species that survive and reproduce are the sole ancestors to the next generation. There is no human intrusion. Selective Breeding Selection of animals or seeds for reproduction based on desired traits. This selection happens because of human selection, it is not natural Define Inbreeding: Inbreeding is the continued breeding of individuals with similar characteristics in order to maintain the desired characteristics in a line of organisms. What is the consequence of inbreeding? Give an example. Inbreeding depression, or the increased chance that a cross between two individuals will bring together two recessive alleles for a genetic defect. Ex: Deafness in Dalmatians. Name two consequences of selective breeding. Loss of variety in the population Can amplify undesired traits unintentionally What is one reason that the Irish Potato Famine was so devastating? There was no diversity in the Irish potato crop, all potatoes were the same so the fungus was able to wipe out all the potatoes.