[nabs-l] punnett squares

[Winona]

Hey Vejas, For Punet Squares, I use graphing tape and braille 
paper and the brailler.  I make the squares on the paper, put the 
paper with the graphing tape on it, and then type the different 
letters.

Hope this helps.

Winona

trumpetqueenwb at gmail.com

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 ----- Original Message -----
From: "Ashley Bramlett" <bookwormahb at earthlink.net
To: "National Association of Blind Students mailing list" 
<nabs-l at nfbnet.org
Date sent: Mon, 27 Feb 2012 19:46:20 -0500
Subject: Re: [nabs-l] punnett squares

Hi,
You cannot do punnet squares in a linear form on a braille note.  
Use a
brailler; yes do them on graph paper or make the  squares 
tactilly somehow.
I used large print.  But same concepts apply.  Punnet squares are 
a grid of
squares.  So picture a small table.
I believe they are two rows, two colums as  I recall.  You put 
two
letters in each square to represent genes.
I really hope I explain the representation right as its been 
years since bio
for me.
If you bring two of the same letters together, its homozygous.  
Note the
capital or lowercase letters as I write.
Capitals are dominant and lower case are recessive.
Example:  bb for recessive brown eyes.
Example B B for dominant blue eyes.

If you have different case of letters, its hetro zygous.
You look at the top letter and letter on the side to put the 
letters in the
square.  For instance a Large P for dominant gene on top and on 
the side a
small O for recessive gene.  So you write P O in the block.
Quite hard to explain without showing you.  I suggest you ask 
your teachers
for clarification.

This video might help; maybe if you watch it with a sighted 
person they can
help you understand it.
http://www.youtube.com/watch?v=J8SQAiVWw_s

Ashley
-----Original Message-----
From: vejas
Sent: Monday, February 27, 2012 7:08 PM
To: nabs-l at nfbnet.org
Subject: [nabs-l] punnett squares

Hi,
I am really, really, really confused with Punnett squares.  So I
have some questions about them.

First, to make them, should I use a Perkins Brailler? I do all my
other science work, as well as for my other subjects except math
homework, on my Braille-Note Apex.  Would a Perkins Brailler be
better?
Also, do you hand-make the grids? I have some graph paper from
math that I might be able to use, but hand-making them might be
easier.
So can you please explain how to make a Punnett? Also, it would
really help if you could additionally tell me how you learned
Punnett squares because I'm really confused.
Thank you for your time.  Attached to this email is a copy of the
questions from the worksheet that I am supposed to do for
homework.  Ignore Problem 10 and any others that you don't have
to solve.
Sincerely,

Vejas






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