Question

step 3: complete the punnett square
put the gametes from one parent in the four boxes along the top, and put the gametes from the other parent in the four boxes along the side. then complete the genotypes of the offspring (the 16 boxes). follow the format shown; both widow’s peak alleles, then both earlobe alleles. dominant before recessive (e.g. aa not aa).
practice: complete the example:
ttcc
ttcc

	tc	tc	tc	tc
tc
tc			ttcc
tc

Explanation:

Step1: Identify gametes from TtCc

The possible gametes from TtCc are TC, Tc, tC, tc.

Step2: Identify gametes from Ttcc

The possible gametes from Ttcc are Tc, Tc, tc, tc.

Step3: Fill the Punnett - Square

For the second row and second column (where Tc from TtCc and Tc from Ttcc combine), the genotype is TTCc.
For the second row and third column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.
For the second row and fourth column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.
For the third row and second column (where Tc from TtCc and Tc from Ttcc combine), the genotype is TTCc.
For the third row and third column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.
For the third row and fourth column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.
For the fourth row and second column (where tC from TtCc and Tc from Ttcc combine), the genotype is TtCc.
For the fourth row and third column (where tC from TtCc and tc from Ttcc combine), the genotype is ttCc.
For the fourth row and fourth column (where tC from TtCc and tc from Ttcc combine), the genotype is ttCc.
For the fifth row and second column (where Tc from TtCc and Tc from Ttcc combine), the genotype is TTCc.
For the fifth row and third column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.
For the fifth row and fourth column (where Tc from TtCc and tc from Ttcc combine), the genotype is TtCc.

Answer:

	Tc	Tc	tc	tc
Tc	TTCc	TTCc	TtCc	TtCc
tC	TtCc	TtCc	ttCc	ttCc
Tc	TTCc	TTCc	TtCc	TtCc