Genetics Internet Assignment Name______

For all websites go to the Kell homepage and click Academics then Media Center and on The Well at the top of the page

Part One: Click on Science, then genetics, then Chromosomes and gender.

Answer the following question as you read the website.

1.  Chromosomes are composed of ______and ______.

2.  How many pairs of chromosomes does a human have?______.

3.  Humans have 22 pairs of ______and one pair of ______chromosomes.

4.  In humans, what two chromosomes determine gender?______and ______.

5.  In humans, what is the male gamete called______.

6.  In humans, what is the female gamete called?______.

7.  In humans, which is larger, the male gamete or the female gamete?______.

8.  In humans, the male or female determine the gender of the offspring?______.

Part Two: Go back and click on Meiosis. Read the introductions and then click on “animation”. Click on “step-through”. Read the paragraph, and then click “play” to watch. Click “continue” and it will take you to the next frame. Follow theses procedures through all eleven frames.

1.  How many cell divisions are involved in meiosis?______

2.  The pairing of homologous chromosomes in prophase I is called______.

3.  During prophase, homologous chromosomes may exchange genetic material through crossing-over. What are the crossing-over points called?______

4.  Do the centromeres of the chromosomes divide during anaphase I?______

5.  In prophase II, how many chromosomes are in each cell?______

6.  During anaphase II, do homologous chromosomes or sister chromatids separate?______(there isn’t a picture but it is discussed)

After you view the 11th frames, click on “conclusion”, and answer the following question.

7.  The 4 daughter cells produced by meiosis are genetically unique. What two occurrences during meiosis lead to this uniqueness? ______and ______.

Part Three:

Go to the back and then click on Mendel’s Genetics. Answer the following questions.

Gregor Mendel is known for his experiments and studies that led to our understanding of genetics today.

1.  In what year were Gregor Mendel’s ideas publishes? ______.

2.  What plant did Mendel use in his research on heredity?______.

3.  Name two reasons why Mendel used this particular plant in his research.______, ______.

4.  What 3 important conclusions did Mendel make from his experiments?

______,______,______.

Part Four:

Go back then click on ZWK990011K. Answer the following questions.

This is a picture of the chromosomes from a human cell.

1.  Are these chromosomes from a male or female?

2.  Which set of chromosomes is different from all the others? _____How is it different?______.

Part Five: Go back to the science main page and page down to Genetics Science Learning Center. Click Tour of the Basics then click on What is Heredity. Read the slide then click next. Answer the questions as you go through the slides.

1.  Why don’t children look exactly like their parents?______

2.  How many chromosomes are in a complete set of human chromosomes?____

3.  How many combinations of chromosomes are there from each parent?______

Part Six: Go back to the main science page and page down to Monohybrid Test Crosses

Click on monohybrid cross problems at the bottom. Click begin problem set. Do problems 1-8.

Record your answers below. Use the tutorials if you miss one.

1. ______

2.______

3.______

4. ______

5. ______

6. ______

7. ______

8. ______

Click on the sex-linked traits and try the first three

1______

2______

3______