1 / 7

By: Arley Wells

GeneticS. By: Arley Wells. What is genetics?. Genetics is the study of heredity, or what makes organisms differ from one another… the transmission of characteristics from one generation to the next… and changes based on heredity. Where did the word come from?.

LeeJohn
Download Presentation

By: Arley Wells

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GeneticS By: Arley Wells

  2. What is genetics? • Genetics is the study of heredity, or what makes organisms differ from one another… • the transmission of characteristics from one generation to the next… • and changes based on heredity.

  3. Where did the word come from? Genetics is based on the word gene. What is a gene? It is a basic unit of heredity.

  4. Each gene directs the development of one ormore traits. • Each gene represents one discrete section of one chromosome. (one single strand of DNA) • There are many different versions. • Each different version is called an allele.

  5. Population Genetics • …is the study of how genetic principles apply to the entire population. • Population genetics has to take into account ecological and evolutionary factors such as population size, migration patterns, and mating selection.

  6. Inbreeding: Why is it bad? • Inbreeding is bad because it mixes two genetic structures of the same gene pool and causes the variance to be limited. • Not for the baby. It’s been known to happen that most babies born under same family relatives have had bad coloring, speech and hearing disorders. Is it safe?

  7. Definitions • gene pool: the total genetic information present in all members of a population or series • gene flow: the exchange of genetic information among populations as a result of migration • genetic variance: variance in allele frequency among samples taken from a population or among sub populations

More Related