In tomatoes plant,none vines (L) are dominant over short vines (l)
show the crossing between the two tomatoes plant,identified the
gentotype,phenotype of the parent and offspring

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Request for Question Clarification by tox-ga on 28 Jun 2004 01:20 PDT

olorieb2004-ga,
What are the genotypes of the parent plants? Or do you want every
possible crossing?

Cheers,
Tox-ga

Hello and thank you for your question.

There are three possibilities for tomatoes
LL genotype (phenotype = long}
Ll genotype (phenotype = long due to dominance)
ll genotype (phenotype = short)

And all the possible crosses are
LL x LL (genotype LL phenotype long)
offspring 100% genotype LL phenotype long

LL x Ll genotypes, phenotype both long)

It's hard to draw a Punnett square in this format 
Take a look at
http://www.borg.com/~lubehawk/psques1a.jpg
In your question, you'll see the 4 possibilities for genotypes are LL LL Ll Ll
So in percentages is 50% LL 50% Ll
And due to dominance the phenotypes are 100% long.

Ll x ll (phenotypes are 1 long, one short)
In the offspring the four genotypes are Ll Ll ll ll 
So in percentages 50% Ll 50% ll
And the offspring phenotypes are 50% long 50% short

Ll x Ll (phenotypes both are long)
In the offspring the four genotypes are LL Ll Ll ll 
So in percentages 25% LL 50% Ll 25% ll
And the offspring phenotypes are 75% long 25% short

ll x ll pheotype short
offspring genotype 100% ll phenotype short

That's it!
No search terms this time - - but you could take a look at
http://www.borg.com/~lubehawk/psquprac.htm#Answer%20to%20Q1
for additional background.

Thanks for letting us help.
If you find any of the above unclear, please request clarification.
I would appreciate it if you would hold off on rating my answer until
I have a chance to respond.

Google Answers Researcher
Richard-ga