Punnett squares

Round peas are dominant over wrinkled ones.  Using "R" for the dominant round trait and "r" for the recessive wrinkled trait, fill in the following crosses.  Then using the squares, figure out the probablility ratios of the phenotypes and genotypes.  I have done the first one for you:

 

Homozygous Dominant X Heterozygous:

Image result for homozygous dominant x heterozygous punnett square  

Phenotypes:  100% will be round

Genotypes:  50% will be homozygous dominant (RR) and 50% will be heterozygous (Rr).

 

 

 

Now, your turn:

Homozygous Dominant X Homozygous Recessive:

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Phenotypes:

Genotypes:

 

 

 

Heterozygous X Heterozygous:

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Phenotypes:

Genotypes:

 

Homozygous Recessive X Heterozygous:

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Phenotypes:

Genotypes:

 

What about incomplete dominance?

Cross a red flower with a blue flower:

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Phenotypes:

Genotypes:

 

What about codominance?

Cross a red flower with a blue flower:

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Phenotypes:

Genotypes:

 

 

Do you want to try a sex-linked trait?

Color blindness is sex-linked.  Fill in this punnett square with a Heterozygous female X Dominant male.

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Phenotypes:

Genotypes: