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MarieSoLovedBest ResponseYou've already chosen the best response.1
13. Complete the monohybrid cross below the example using the directions for completing the Punnett Square in the reading and the example below. Then, list the genotypic ratio and describe the offspring. Be sure to remember that the capital letter is dominant. Example: A green pea plant (GG) is being crossed with a green pea plant (Gg) yellow is the recessive color. G G GG GG Gg Gg G genotype = 2 GG : 2 Gg : 0 gg g phenotype = 4 green pea plants : 0 yellow pea plants A green pea plant (Gg) is crossed with a yellow pea plant (gg). Complete the Punnett Square using THESE genotypes. Genotype: ___ GG : ____ Gg : ____ gg Phenotype: ____ green plants : ____ yellow plants
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
they have bin boxes were the gs r .
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
this is very comfussing
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Oh, I can definitely help you with this. Let me just finish up with another student real quick, okay?
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Okay, I am here. :) Please give me just a moment to type this stuff up. :)
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
So your box looks like this, right? Just a little neater... :) dw:1363383193534:dw
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Okay. This is called a Punnett square. This will help you find out what genes an organism will have and what it will look like, based on the genes the parent gives it. Punnett squares usually test for one gene (a monohybrid cross), (in this case color) but they can test for more than one at the same time. Does this make sense? If so, I can move on.
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Okay, great. :) To figure out a Punnett square, you have to realize that everything is based on probability (yes, math). To get a punnett square filled out, we have to multiply the alleles together to figure out gene probability. But don't worry  it's not too hard once you get the knack of it. :) Here's the first one: dw:1363383633186:dw Do you get this?
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
In that first box, I multiplied G * G to get GG
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
dw:1363383742031:dw
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Perfect! :D You got it! Now do you feel comfortable moving on to the next part?
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
great! Now we do the probability part. Looking at the cross, we can see that ALL of then contain the dominant allele, "G" That means that there is a 100? chance that the flowers will have the dominant color, and a zero percent chance that they will have the recessive (g) color. We can write the ratio like this: 2:2, since there IS a 50% chance that they could *have* the (g) in their genes, even though they won't use it. Does that make sense? dw:1363384226703:dw
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
phenotype = 4 green pea plants : 0 yellow pea plants
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
So, do you think you could do part 2 on your own, or would you still like me to help you?
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
imma try on my own frist then c how i do .
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Okay, great. :) Let me know if you get stuck or would like me to doublecheck anything. :)
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
dw:1363384842981:dw
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Wait a minute... A green pea plant (Gg) is crossed with a yellow pea plant (gg). Complete the Punnett Square using THESE genotypes. your square should look like this: dw:1363385208090:dw
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
oh its crossed lol oh ok
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
Gg.....gG gG.....gG
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
You're going to want to make sure the multiplication is right. Also, you may give your science teacher a heart attack if you put the dominant allele last! The dominant (capital letter) allele ALWAYS goes first. :) dw:1363385814570:dw Do you think you could get those now?
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Also, if it helps, this is how you do the genes. So, let's the mommy flower is gg, and the daddy flower is Gg. Mommy goes on the side, and Daddy goes on top: dw:1363386017181:dw lol it sounds kind of sill to put it that way, but do you get it?
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
so..it Gg..gg at the bottom
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Perfect. :) And now... Genotype: ___ GG : ____ Gg : ____ gg Phenotype: ____ green plants : ____ yellow plants
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
gg=0 Gg=2 gg=2 phenotyp:=2 yelow plant =2
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
For the genotype....Not quite... Oh, never mind, I see you changed it. :) Great job! :D
 one year ago

MarieSoLovedBest ResponseYou've already chosen the best response.1
YAY thx so much:)
 one year ago

tafkas77Best ResponseYou've already chosen the best response.2
Oh, you're welcome! You did an awesome job. :) *gives extra medal*
 one year ago
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