This document contains summaries of multiple sources on genetics. It explains that males have XY chromosomes and females have XX, and whether an X or Y sperm fertilizes the egg determines the baby's sex. Another source describes cell division and genetics, noting that pictures help explain chromosomes and genetics concepts. A website is summarized that describes how a baby's sex is determined by the 23rd chromosome pair from the male. Another website summary explains that DNA contains four chemicals that form chromosomes, which are inherited from parents and can cause genetic disorders. The document provides concise summaries of several information sources on genetics.

1. Genetics By: Kelly Schweyer

2. Submitted To: Mrs. FaulknerSubmitted from: Kelly SchweyerDue Date: May 31st, 2011Course Code: SBI 3C

3. Determining The Gender Determining the gender depends on particular pairs of chromosomes Males have XY and Females have XX If a Y sperm fertilizes an X egg the result is XY, a boy If an X sperm fertilizes the egg, the result is XX, a girl

4. Cell Division and GeneticsBy: Robert Snedden This book is very helpful for understanding the concepts of determining the gender of your baby. It gives pictures that explain the electron micrograph which is the X and Y chromosomes. Yes throughout the book there are pictures like DNA coiling itself, an illustration on pedigrees and family genes which are potentially passed down to the child. There are definitions on the topic but you have to read the information in order to see them. Also the important words are in bold lettering and can be found in the glossary at the back of the book for specific definitions.

5. This picture is an electron micrograph showing the X and Y chromosomes.

6. How A Boy or Girl is created Both the egg and the spermatozoa have 23 chromosomes it is the male side that determines the sex of the baby This website is good at describing the key points because it states the information based on opinion and fact. No there is not a photo provided but the information given is really easy to comprehend. No there are not definitions the text is just descriptive. This site is special to the topic because it goes through the stages of fertility and describes in short form important information on the topic. Just like the points above, the information is listed clearly and is basically review to what we learned in class. You can go to: http://www.paternityangel.com/Articles_zone/How_it_happens/How-4.htm

7. The Basics on Genes and Genetic Disorders DNA contains four chemicals (adenine, thymine, cytosine, and guanine — called A, T, C, and G for short) that are strung in patterns on extremely thin, coiled strands in the cell DNA is wrapped together to form structures called chromosomes you have two of every gene You inherit your parents' genes http://kidshealth.org/teen/your_body/health_basics/genes_genetic_disorders.html# * The first point was something new I learned when reading this website.

8. Continued…. In the website , “The Basics on Genes and Genetic Disorders” there is lots of useful information you can read. This website is different from the previous one because it has information on health for teens, children and adults. There are links to many different health factors which can be useful as well. This website is understandable to me as a reader because it asks you a question and then what the following answer will be. It is a thinking website to keep you interested. Yes the definitions are included in the text you just have to read the answered questions. The only photo that is really given is the one above which states what the website will be about. This site is special to the Genetic topic because it talks about your Genes and Heredity, Gene Disorders, and Changing Genes. It not only talks about how a boy or girl is formed through genes but how genes can also have/cause disorders.

9. Explanation On Genetics I chose the key point on How a boy or girl is created through genetics because It is interesting to learn more about how we humans are created from previous generations genetics. This unit made changed my thoughts on biology class because there was pedigrees and family trees involved. The knowledge we learned in this unit is important because when we had to figure out our own personal family traits it was beneficial because we can use the information to figure out how are own children’s genes were formed. It also goes to show that everyone is made up differently and nobody has the exact same traits because there altered.