Lesson 28 Genetic Factors Subtitle

https://www.youtube.com/watch?v=eRLJscAlk1 M Activator https://www.youtube.com/watch?v=eRLJscAlk1 M What are some ways humans are impacting the environment mentioned in the poem? What line spoke to you the most? 1/18/2019 Add a footer

Genes A unit of heredity that is transferred from a parent to offspring Determines some characteristic of the offspring Genes can code for: Eye color, hair type, hair color, size, etc 1/18/2019 Add a footer

Genetic Errors Errors in the genetic code or "gene recipe" can happen in a variety of ways. Missing information from the code, Codes have too much information Information is in the wrong order Examples Trisomy: 3 copies of chromosomes instead of two Monosomy: one member of a chromosome pair is missing Gene mutations 1/18/2019 Add a footer

Genes and Natural Selection https://www.youtube.com/watch?v=vnktXHBvE8s Natural Selection: a process resulting in the survival of those individuals from a population of animals or plants that are best adapted to the prevailing environmental conditions. The survivors produce more offspring than those less well adapted  characteristics of the population change over time  evolution 1/18/2019 Add a footer

Genetic Drift Bottleneck Genetic Drift: sharp reduction in the size of a population due to environmental events or human activities (such as genocide) 1/18/2019 Add a footer

Genetic Drift Founder Effect: loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population 1/18/2019 Add a footer

Breeding for certain Genetic Traits https://www.youtube.com/watch?v=tgpBwnMBfBw Dog Breeding https://www.livescience.com/6023-genes-dogs-breeds-discovered.html Weird Science News 1/18/2019 Add a footer