Wednesday December 8th

Wednesday December 8th Scribe Post

HOMEWORK:

UP page 51-52 due tomorrow

Lab 35 due friday

QUIZ ON MONDAY-on crosses and meiosis(allowed to use the notes you took from the meiosis chapter) to help on the quiz, do UP pages 53-56.

In the beginning of class, Mr. Paek went over page 49 in the UP packet and answered some questions that we needed help with.

Then, we went over something new called Karyotype.

Karyotypes help us because scientists look at them and from it can see what’s wrong. Every chromosome needs to match up with another. Yet in some cases, they don’t and that is how scientists can see what the problem is.

An example of a Karyotype is Down Syndrome(picture below) In Down Syndrome, there is an extra 21st chromosome. The extra chromosome causes mental and physical abnormalities and there is no cure for it.

As you can see in the picture below, the 21’st chromosome has 3 instead of 2.

There are many more examples of Karyotypes yet Down Syndrome is just one.

To get a better understanding of Karyotypes, go to....

www.learn.genetics.utah.edu/content/begin/traits/karyotypes/

This website should help you get a better understanding of it, and basically let’s you match up different chromosomes together.

Next in class we went over UP page 51(picture above) . Genetic Disorder Problems are similar to the genetic trait crosses that we were completing in class the other day. The key thing to solving these to to read the directions carefully and know the terms that they are asking for. The above picture is an from page 51 and gives you an example of how to solve the problems. Look at past scribes if you need help with the genetic trait crosses. Also for page 52, III. is recessive, IV. is recessive, V. is dominant and VI. is dominant. That will help you answer the questions

NEXT SCRIBER IS JORDAN:)