Bioloogy 30/ blog
By: Kyle Jensen
Date of blog: Nov. 22
self assesment 3/3

Provide a review of the class:
- Case study p479
-pedigree worksheet
-practice
-chromosomal theory

Offers thoughts/opinions of material covered, identifies area of difficulty/concern, or poses additional questions stemming from discussion:
-after going though the work sheet and practiced some questions on pedigree they are starting to become way easyer.
- we learned about the 3 genotypes in females and the 2 genotypes in males
- we also learned that with certain traites unexpected things can happen with the off spring.

Provide additonal insight on topic(s) discussed:
-we found out thought the case study that tom was the murder because there was on sign of 0- blood.


-

November 26, 2007. Janelle Eslinger. 3/3.

What went down in class today:

1. What are barr bodies?


2. Marked the test from Friday on Mandelian Genetics.


3. Gene mapping in the note handout. Complete the questions at the end of the handout and reffer to pages 450 & 503 in the textbook.


4. Corrections for the Mandelian Genetics test are due on Monday, December 3. You have the opportunity to gain 1/3 of the marks you missed!


5. We also have a Quiz on Chapter 21 & 22 on Thursday, November 29.

Important terms and a summary of the material covered:

Linked Genes - are located on the same chormisome. Genes located on the same chromosome tend ot be transmitted together.

This helps explain the difference that occured when Morgan was breeing fruit flies. Crossing over, (a term learned in meiosis chapter) provides new combinations.

For example, imagine a man who has one chromosome with brown-eye and brown-hair genes, and another chromosome with blue-eye and blonde-hair genes in his cells. Usually, his sperm cells will have either brown-eye and brown-hair genes, or blue-eye and blonde-hair genes. But if crossing over occurs, the man will produce one sperm cell with brown-eye and blonde-hair genes, and another with blue-eye and brown-hair genes.

The crossover frequency is another important term to consider. A crossover value of 1% indicates that the genes are close to each other. A crossover value of 12% indicates that the genes are much farther apart. The greather the crossover frequency of crossover, the greater the map distance. (Map Distance - refers to the distance between two genes along the same chromisome).

What are the maps like that are being made now?

The genome's cartographers are now making maps that combine features of both genetic-linkage and physical maps. As mapping techniques advance, scientists try to create maps with more landmarks that are more closely, evenly, and accurately spaced. But in contrast to DNA sequencing, which has become increasingly automated, genome mapping still can only be accomplished by experienced scientists.

This website was really helpful for understanding gene mapping. http://www.genomenewsnetwork.org/resources/whats_a_genome/Chp3_1.shtml#chp3#1

Jordan's Best Biology Blogging Blog

What we learned in Biology 30 today (3/3)

We discussed are homework, this included>

Case Study on page 479:

In this activity you had to solve a murder mystery using genetics. A suspect witnesses that the murderer had freckled skin. They also found a letter opener which had blood on it, even though there was no cuts or abrasions on the victim. You are given the blood types of the suspects and if they are dominant or recessive to freckles.

You must find who did it using punnett squares and pedigree's

This is a great idea because you can what we learn in biology in a close to real life situation

Next we talked about the Pedigree studies work sheet we were assigned for homework...

Not much to say about that. Its just about all common sense, just remember the rules. (Which by the way are all on are biology data sheets)


We began notes on Chromosomal Theory----Most of it went right over my head because most of the focus was put on are upcoming test tomorrow.

For tomorrow genetic test it was mentioned to know this,

Know punnet squares
Know pedigrees
Know types of inheritance
Know how to do a test cross

Not really to excited about that.....

Andrea Grenier: Nov. 19th (3/3)

What we did:
We went over question #9 on P.483
We finished nothes on the law of independent assortment and probability calculations
We did an activity on dihybrid crosses by tossing pennies

Thoughts/Opinions about material:
During the activity, we labelled pennies and tossed them to show the probability of inheriting genetic traits. I liked this activity because it showed random patterns and it parallels to real life. In real life, the probability of inheriting certain genetic traits is random. What I didn't like about this activity is that you had to toss 4 pennies...96 times...twice!! And then write your result for each toss. Oh and I missed the last block of the friday before because I was getting a hepatitis A shot...So I had no clue about question 9, so I can't really relate to that...

Above and Beyond:

I like this Punnett Square because it shows really well the predicted genetic traits. I like the colors.

Max's Amazing Blog of Ultimate Destiny!!!!-November 20th, 2007- 3/3

What We Did Today- We discussed the horrors of (gasp!) of genotype sets that contain more than two alleles, using notes and our Mr. Challoner also went over the penny allele assignment a little bit. That's it really. Kinda short i know. BUt today seemed kinda short. In a short kind of way. Challypoo close your eyes: While we're on the subject, how bout I saw a sight: (no disrespect!) a fat black midget, the coolest thing ever. Not that I have a fetish or anything, it's one of those things that just catch your eye. Power to midgets! With all due respect, it made my week. Well thats all.



































































































































































































































Haha. Got ya, Challypoo!



Thoughts/Opinions On Material:

People were sorta finding this whole multiple allele thing tough. Take for example, the question on page 478, #5. It asks for the Genotypes of the mommy mouse and the daddy mouse. It tells you that they had a great night, and a month later 40 baby mice popped out. 4 of those did not get snuffed by the cat(stupid pussy!). Out of these 4(generalisation) 2 had full color genotypes(D1), 1 had dilute color(what is dilute?- faded, not as colorful as full color, etc.), and one picked up the "DEADLY" homozygous allele(OOOHH!). I find that the best way to solve this is to work backwards, which is faster than dumb old Punnet and his square squares. Both parents have two alleles(for those who really don't get it yet), which are D?D? and D?D?. The order of dominance, from most dominant, to downright recessive, is Full Color(D1) > Dilute Color(D2) > Dead mouse(D3). the dead one is the key to the whole problem. He's the most recessive. To get a homozygous recessive, both parents MUST have the recessive allele. So now the 'rents genotypes are D?D3 and D?D3. The next part is easy. If one baby mouse had Full color(D1) and the other had dilute colouring(D2), then one parent has D2, the other D1. So it looks like this: D1D3 and D2D3. Easy peasy!





Above and Beyond:


Genetics for some is no walk in the park, so here's a site with games that help you understand(hopefully)- http://nature.ca/genome/04/041/041_e.cfm

also a review for that abomination that is the genetics unit test lol: http://www.quia.com/pop/13027.html

Not too shabby, I guess.

Later you hos

Luke Helland Nov. 16 (3/3) Bio 30

Today was a double block and we basically kept on going with Genetics. We finished taking notes from the booklet he gave us. (fill in the blank). We learned about Medelian Genetics and how he experimented with pea plants. We also learned about Test crosses and Punnett Squares which are an easy way to follow the inheritance of a single trait. We did alot of practice on punnett squares in the handout he gave us.

The punnent squares are pretty easy to do. I still don't really get the difference between a test cross and punnett square. You just need to remember that the capitol letter is always dominant.
ex:

P p
p Pp pp
p Pp pp


I have given it some thought and I was thinking in the future if we could decide what traits we want or don't want for our offspring. If we could identify traits in offspring and manipulate them, we could have an choice what our kids look like and what they would be like. If this were possible people would be less susseptable to desieases and viruses and it could be a sort of modern day Natural Selection.

3/3 Jessica Leussink 14/11/07

What We Did Today!!!

- Looked at the Comparison of Miosis and Mitosis worksheet, Looked at and got answers for the practise quiz (Mitosis/Meiosis Quiz), Looked at Online Meiosis Practice and Karyotyping Exersice, Reviewed Karyotyping and Nondisjunction (Starts on page 455 of your text book), Started the actual Meiosis Quiz (NOTE: Two questions were OMITED, but I think we'll be finishing them later on after we learn the material that goes with it), Recieved a case study Cell Division and Life Cycles, Were assigned the last question on the practise quiz due for tomorrow

Thoughts

The quiz wasn't too hard so if you study it'll be easy. As for the case study, I suggested you use active reading because theres a lot on that page that you may find important or not. It talks about "the reproductive life cycle of plants and how reproductive diversity contributes to the evolution of complex organisms." If you don't understand it, I'm pretty sure he's going to go over it more in depth. Theres pictures of the cycles oo plants and humans on the back side of the page and i thought they were very helpful.

In Addition...

This Karyotyping idea sounds kind of hard, but if you understand the formulas that helps alot.