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Objective The student will be able to: - PowerPoint PPT Presentation


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Objective The student will be able to:. Find the alleles for a Dihybrid cross using the FOIL method, and the Box method. There are two techniques you can use for finding gametes for a Dihybrid Cross. The best part about it is that they are all the same! Huh? Whaddaya mean?

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slide1

ObjectiveThe student will be able to:

Find the alleles for a Dihybrid cross using the FOIL method, and the Box method.

there are two techniques you can use for finding gametes for a dihybrid cross
There are two techniques you can use for finding gametes for a Dihybrid Cross.

The best part about it is that they are all the same! Huh? Whaddaya mean?

It’s all about how you write it…Here they are!

  • FOIL
  • Box Method

Sit back, relax (but make sure to write this down), and I’ll show ya!

slide3

The FOIL method is ONLY used when finding the gametes from parents with two traits. Use the FOIL method to find the gametes:(RrYy)

remember foil reminds you to match up the
Remember, FOIL reminds you to match up the:

First alleles

Outer alleles

Inner alleles

Last alleles

the third method is the box method this method works for every problem
The third method is the Box Method. This method works for every problem!

Here’s how you do it.

  • Draw a box.
  • Write the first set of alleles on the top and the second set of alleles on the side of a box. It does not matter which goes where.
cross the alleles as you would in a monohybrid cross
Cross the Alleles as you would in a monohybrid cross.

RY

First alleles:

Outer alleles:

Inner alleles:

Last alleles:

Ry

rY

RY

rY

ry

Ry

ry

You have 2 techniques. Pick the one you like the best!

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