Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Search
Follow The Annenberg Learner on LinkedIn Follow The Annenberg Learner on Facebook Follow Annenberg Learner on Twitter
Rediscovering Biology Logo
Home
Online TextbookCase StudiesExpertsArchiveGlossarySite Map
Channel-Talk

Re: [Channel-talkbio] Unit 11: Biology of Sex and Gender

From: ed leitz <edleitz@hotmail.com>
Date: Tue Mar 27 2007 - 10:09:16 EDT

Hi Karen and Mary,
    I also thought this was a very interesting unit although it was not
nearly as "heavy" with information as the last one, this unit seemed to have
almost as many questions as answers. I believe this is a great topic with
students especially the issue of sex vs. gender. Even looking at a topic as
seemingly simple as sex where we can distinguish XY and XX there are so many
exceptions with Turner's and Kleinfelter's to name just a few. I have
taught that the presence of the Y is the sex determing chromosome however if
we add intersexuals and the idea of gender into the equation it becomes much
more complicated.
    I must be such an incredibly difficult decision for those parents who
are forced to choose the childs sex at birth, however I do not agree with
the text in stating that many are arguing to let the child grow to make
their own decision. At what point will the child be old enough enough and
mature enough to make this decision, and long can or should they live with
the ambiguity of not knowing their true sex. Working in a high school I
know that teenagers change their minds almost daily. This is a much larger
decision and you cannot one day choose to be a man and the nect choose to be
a woman.
   The text discussing the evolution of the Y chromosome was another topic I
found interesting. I knew the Y chromosome was much smaller than the rest,
but never thought about I having so fewer genes. The text calling it a
"genetic junkyard" was an interesting phrase and it shows how much genetic
information we carry that is either not functional or we do not know the
function of yet. When discussing the life expectency of men and women and
men not having the extra X chromosome as a back-up I began to wonder if a
man XXY would have a longer life expectancy than a man XY, all other things
being equal.
    Lastly, I was unsure why both the text and video spent a very short
amount of time discussing the possibility of genetic links to homosexuality.
  This could be a very interesting topic but it seems unrelated to the idea
of sex and gender.

Ed

>From: "Mary Johnston" <mjohnston@haverhill-ps.org>
>Reply-To: Discussion list for REDISCOVERING
>BIOLOGY<channel-talkbio@learner.org>
>To: <channel-talkbio@learner.org>
>Subject: Re: [Channel-talkbio] Unit 11: Biology of Sex and Gender
>Date: Tue, 20 Mar 2007 14:49:06 -0400
>
>Hi Karen and Ed,
> This was an interesting unit for me because I do not have much
>experience with individuals who are confused with their gender and
>sexual orientation. I totally agree with the statement in the online
>text that "sex is biological and gender is subjective". I think there
>are definitely people born with the physical attributes of one sex but
>who for many different reasons just relate better to a different gender.
>If that is how they feel, then I think nothing should stop them from
>trying to become who they believe they should be. Identity is a truly
>personal and emotional formative issue and it needs to handled with the
>utmost dignity and understanding. I would have mixed feelings if my own
>child were to express concern that she was not fitting with her gender,
>but I would allow her to explore her options and at an appropriate age
>make an informed decision about how she wanted to proceed. This is a
>really difficult issue and I think it has to be handled on an individual
>basis.
> One really interesting segment in the online text dealt with why
>men's life spans are so much shorter on average than female life spans.
>The text discussed some protective effects of estrogen, but now in 2007
>hormone replacement therapy has been linked with breast and ovarian
>cancer so it is not a viable option for many women. There was also
>information about how testosterone, particularly in the teenage years
>contributes to a surge in aggrression and behavior that leads in some
>cases to premature death by homicide, suicide, and other accidents. It
>has also been shown testosterone at any age increases LDL levels ( the
>"bad" cholesterol) and decreases HDL ("good" cholesterol) thus
>increasing the risk of heart attack, still the # 1 cause of death in the
>U.S.
> The text also mentioned the protective effect in females of having
>a second copy of the X chromosome, which can compensate for a mutation
>on the first copy. Males don't have this "back-up" so they are more
>likely to suffer from X-linked genetic diseases such as colorblindness
>and hemophilia..
> Finally, the text mentioned that women tend to have a slower
>metabolic rate that may lead to fewer "free radicals" and thus less
>cellular damage that causes increased aging and may contribute to
>premature death. On the other hand women are more susceptible to
>automimmune diseases like lupus and when women engage in risky behavior
>such as smoking, they have no increased life span over men.
> After reading all this, it seems inevitable to conclude that men
>and women are fundamentally different on so many levels. The
>differences do not make us unequal. They simply make us unique. I am
>glad and proud to be a woman and I am so happy for the chance to be a
>mother and give birth and care for a child. It is truly the most
>fulfilling and challenging work I have ever done. Let me know how you
>two feel.
>Mary
>
>________________________________
>
>From: channel-talkbio-bounces@learner.org on behalf of
>channel-talkbio-request@learner.org
>Sent: Tue 3/20/2007 12:00 PM
>To: channel-talkbio@learner.org
>Subject: Channel-talkbio Digest, Vol 7, Issue 6
>
>
>
>Send Channel-talkbio mailing list submissions to
> channel-talkbio@learner.org
>
>To subscribe or unsubscribe via the World Wide Web, visit
> http://learner2.learner.org/mailman/listinfo/channel-talkbio
>or, via email, send a message with subject or body 'help' to
> channel-talkbio-request@learner.org
>
>You can reach the person managing the list at
> channel-talkbio-owner@learner.org
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of Channel-talkbio digest..."
>
>
>Today's Topics:
>
> 1. Re: Unit 10 Neurobiology (Karen Blaustein)
> 2. Re: Unit 10 Neurobiology (ed leitz)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Mon, 19 Mar 2007 14:28:04 -0400
>From: "Karen Blaustein" <kblaustein@haverhill-ps.org>
>Subject: Re: [Channel-talkbio] Unit 10 Neurobiology
>To: "Discussion list for REDISCOVERING BIOLOGY"
> <channel-talkbio@learner.org>
>Message-ID:
>
><69BB75AAB563AB418EEB93D45855D87D0196E2EC@hps-mail.haverhill-ps.org>
>
>Hi Mary and Ed,
>I also thought this unit was very interesting. I was glad to learn that
>studies have shown that stimulating environments in the "golden years"
>can increase neurogenesis and therefore increase quality of life. My
>grandmother had dementia, but she lived into her 90's and I believe her
>dementia started in her mid eighties. She was not very mentally active
>during her lifetime, so there is still hope for me especially if it is
>inherited! However, analyzing myself I must admit that I have a
>horrible memory for names including movie and book titles. I am always
>kidding with my husband that "Al" has the information. I recently
>watched a program about memory contests. A man who was diagnosed with a
>disease that eventually retards the memory decided to become active with
>the contests in order to stimulate his memory. The contestants can
>memorize the order of cards in a shuffled deck, 100 or more new names
>with the associated faces, hundreds and thousands of numbers in a
>sequential order. This is very impressive. The trick to doing this is
>to associate what you are memorizing with objects or people that you are
>familiar with. I think I will try to start working improving my own
>memory by using this method.
>
>As far as the other subject concerning the medical use of marijuana, I
>can see both sides of the controversy. As we discussed in our weekly
>meeting with Mary and Natalie, I believe we all decided that caffeine
>and alcohol were the most detrimental to society. Both alcohol and
>caffeine are legal and can be extremely addictive. As far as I know, I
>don't believe marijuana is addictive or at least not as addictive as
>either alcohol or caffeine. Alcohol and caffeine have extremely
>negative affects on our health care system instigating an abundance of
>illnesses that all of society has to pay for with increased medical
>insurance and medical costs. Alcohol is also known to cause impairment
>inducing violent behavior, breaking up families, and causing thousands
>of alcohol related deaths due to car accidents. Marijuana is not know to
>cause any of the forementioned problems. Should we ban the possible
>medical benefits because of the unacceptable view of the drug in society
>knowing that its affects are much less detrimental to society than drugs
>that are legal? On the other hand, as Mary mentioned why should we
>continue to "numb" our society more than it already is?
>
>-Karen
>
>________________________________
>
>From: channel-talkbio-bounces@learner.org on behalf of Mary Johnston
>Sent: Thu 3/15/2007 11:52 AM
>To: channel-talkbio@learner.org
>Subject: Re: [Channel-talkbio] Unit 10 Neurobiology
>
>
>
>Hey Karen and Ed,
> I don't know about you two but I found this unit to be quite heavy in
>a lot of material. I was really interested, however, in the
>neurogenesis aspect of the unit. That old saying that "You can't teach
>an old dog new tricks," turns out to be wrong because studies have shown
>that stimulating environments result in the creation of neurons. Rats
>given stimulating environments had 15% more neurons than rats kept on
>boring ordinary lab situations. I think we have all experienced this in
>our classrooms. On days, when we have a novel activity or lab or fun
>video, the kids are much more receptive than on a day when we are doing
>lecture notes. Of course, we need both activities to complete our
>learning, but if we stagnate and always do the same thing, I think
>students don't learn material as well. I think the same is true going
>in the other direction. If you did a lab every day and never had an
>opportunity for direct teaching students would probably miss out on some
>vital pieces of information. I guess I am an advocate for trying to do
>a little bit of everything each week to keep kids stimulated and keep
>those neurons growing!
> Another aspect that I wanted to discuss was the medical use of
>marijuana. I am against this. I was just watching on TV the other day
>that students in California high schools where the medical use of
>marijunana is legal are getting signed notes from doctors that say
>things like stress should allow them to be able to smoke pot. Right on
>school grounds kids are lighting up and fighting to get away with it.
>Of course, marijuana is illegal on school grounds, but you can easily
>see that this has opened the door to make getting high for non-medical
>reasons a lot easier. Soon doctor's notes will be faked or sold and
>people will abuse the system. Yes, there are a small amount of people
>that marijunana might comfort or help out, but the vast majority of
>people who smoke it are not doing so for medical reasons and it is they
>who will try and take adavnatage of the system. Besides, there are so
>many over-the counter and prescriptio analgesics as it is. Do we really
>need to "numb" our society any more? Let me know what you think.
>Mary Johnston
>
>________________________________
>
>From: channel-talkbio-bounces@learner.org on behalf of
>channel-talkbio-request@learner.org
>
>
>
>
>
>
>
>
>----------------------------------------------------------------------
>
>
> >
> >
> >
> >
> >------------------------------
> >
> >_______________________________________________
> >Channel-talkbio mailing list
> >Channel-talkbio@learner.org
> >http://learner2.learner.org/mailman/listinfo/channel-talkbio
> >
> >End of Channel-talkbio Digest, Vol 7, Issue 1
> >*********************************************
> >
> >
> >
> >_______________________________________________
> >Channel-talkbio mailing list
> >Channel-talkbio@learner.org
> >http://learner2.learner.org/mailman/listinfo/channel-talkbio
> >
> >You may un-subscribe from this email list at any time by using the
>online
> >form at the above URL. If you have difficulty using this form, please
>send
> >email to Channel-Channel-talkbio@learner.org and our mailing list
> >administrator will assist you. Our privacy policy is posted online at:
> >http://www.learner.org/about/privacy_policy.html
>
>_________________________________________________________________
>The average US Credit Score is 675. The cost to see yours: $0 by
>Experian.
>http://www.freecreditreport.com/pm/default.aspx?sc=660600&bcd=EMAILFOOTE
>RAVERAGE
>
>_______________________________________________
>Channel-talkbio mailing list
>Channel-talkbio@learner.org
>http://learner2.learner.org/mailman/listinfo/channel-talkbio
>
>You may un-subscribe from this email list at any time by using the
>online form at the above URL. If you have difficulty using this form,
>please send email to Channel-Channel-talkbio@learner.org and our mailing
>list administrator will assist you. Our privacy policy is posted online
>at: http://www.learner.org/about/privacy_policy.html
>
>
>
>
>
>------------------------------
>
>_______________________________________________
>Channel-talkbio mailing list
>Channel-talkbio@learner.org
>http://learner2.learner.org/mailman/listinfo/channel-talkbio
>
>End of Channel-talkbio Digest, Vol 7, Issue 4
>*********************************************
>
>
>
>_______________________________________________
>Channel-talkbio mailing list
>Channel-talkbio@learner.org
>http://learner2.learner.org/mailman/listinfo/channel-talkbio
>
>You may un-subscribe from this email list at any time by using the
>online form at the above URL. If you have difficulty using this form,
>please send email to Channel-Channel-talkbio@learner.org and our mailing
>list administrator will assist you. Our privacy policy is posted online
>at: http://www.learner.org/about/privacy_policy.html
>
>
>
>
>
>------------------------------
>
>Message: 2
>Date: Tue, 20 Mar 2007 09:36:44 -0400
>From: "ed leitz" <edleitz@hotmail.com>
>Subject: Re: [Channel-talkbio] Unit 10 Neurobiology
>To: channel-talkbio@learner.org
>Message-ID: <BAY101-F35184BA5A8A39DE4A47FEDA0750@phx.gbl>
>Content-Type: text/plain; format=flowed
>
>Hi Karen and Mary
>
>I agree with both of you in that it was a vrey interesting unit and also
>full of very detailed information. I do believe that staying active is
>a
>very important role in maintaining good health and it is nice to see
>reaserch to support it. I have always advicated that instead of all the
>fad
>diets, someone who wants to be health should simply become more active.
>I
>grew up on a farm in western PA and when I look around at all the "old"
>
>farmers I see people who are extremely active their entire life. They
>were
>not on any special diet they were simply active. My grandmother lived
>this
>way for years and on her 90th birthday she traveled Australia and New
>Zealand for a month. I'm a firm believer that hard work is better for
>your
>health than anything else.
>
>Another aspect of this unit I found interesting was the neurological
>side of
>addictions. I believe that more and more people are finally realizing
>that
>addictions can be a medical problem and are not completely a lack of
>will
>power. If more of this research could be presented to the general
>public
>maybe we could work harder to support and try to cure those with
>addictions.
> Having said that I still believe that those people who have addictions
>must be willing to help themselves.
>
>On the issue of medical marijuana, I am strongly against it being used
>in
>any aspect. I understand that may drugs are prescribed which are also
>abused by the general public and that is why some medications have such
>a
>high street value. I also believe that so many people especially young
>people already abuse marijuana that we will just be aiding their access
>to
>it. I also believe it will lead to more people breaking into and
>robbing
>pharmacies to get more of it. With caffine and nicotine I understand
>the
>affect they are having on out health care system however I still believe
>that alcohol is the biggest problem. The affects of caffine and
>nicotine
>(especially now that smoking is banned in many public places) is more
>centered on the person using it. Peope with a high nicotine level do
>not
>cause car accidents and take the lives of others. Also as Karen was
>saying,
>I don't believe nicotine and caffine break-up nearly as many families as
>do
>alcohol. Unfortunatley we can try education but that doesn't seem to
>working to reduce alcohol consumption especially amoung teenagers and
>the
>only other option in our country has already been tried and proven to
>not
>work.
>
>_________________________________________________________________
>It's tax season, make sure to follow these few simple tips
>http://articles.moneycentral.msn.com/Taxes/PreparationTips/PreparationTi
>ps.aspx?icid=HMMartagline
>
>
>
>------------------------------
>
>_______________________________________________
>Channel-talkbio mailing list
>Channel-talkbio@learner.org
>http://learner2.learner.org/mailman/listinfo/channel-talkbio
>
>End of Channel-talkbio Digest, Vol 7, Issue 6
>*********************************************
>
>
>
>_______________________________________________
>Channel-talkbio mailing list
>Channel-talkbio@learner.org
>http://learner2.learner.org/mailman/listinfo/channel-talkbio
>
>You may un-subscribe from this email list at any time by using the online
>form at the above URL. If you have difficulty using this form, please send
>email to Channel-Channel-talkbio@learner.org and our mailing list
>administrator will assist you. Our privacy policy is posted online at:
>http://www.learner.org/about/privacy_policy.html

_________________________________________________________________
Exercise your brain! Try Flexicon.
http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07

_______________________________________________
Channel-talkbio mailing list
Channel-talkbio@learner.org
http://learner2.learner.org/mailman/listinfo/channel-talkbio

You may un-subscribe from this email list at any time by using the online form at the above URL. If you have difficulty using this form, please send email to Channel-Channel-talkbio@learner.org and our mailing list administrator will assist you. Our privacy policy is posted online at: http://www.learner.org/about/privacy_policy.html
Received on Tue Mar 27 10:46:13 2007

  Home  |  Catalog  |  About Us  |  Search  |  Contact Us

| Follow The Annenberg Learner on Facebook
 

  © Annenberg Foundation 2013. All rights reserved.
Privacy Policy