Question

In: Biology

2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This...

2. Cross a homozygous tall yellow seeded plant with a homozygous short green seeded plant. This is called the P1 cross, and it will produce offspring called the F1 generation. Tallness is dominant to shortness, so use a capital T to represent the tallness allele and lower case t to represent the shortness allele. Yellow seeds are dominant to green sees, so use a capital Y to represent the yellow seed allele and a lower case y to represent the green seed allele.Cross two of the F1 plants the experiment. The offspring from the F1 cross will be called the F2 generation.

a) What is the genotype of one potential F1 parent?

b) What gametes can that F1 parent make?

c) What is the genotype of another potential F1 Parent?

d) What gametes can that F1 parent make?

e) Create a Punnette square explaining this

f) What is the phenotypic ratio of the F2 Plants?

Solutions

Expert Solution

Homozygous tall yellow seeded plant = TTYY
Homozygous short green seeded plant = ttyy
P1 Cross = F1 generation = TtYy (All offsprings)

a) Genotype of one potential F1 parent = TtYy (Heterozygous tall yellow seeded plant)
b) Gametes by this one potential F1 parent = TY, Ty, tY, ty
c) Genotype of another potential F1 Parent = TtYy (Heterozygous tall yellow seeded plant)
d) Gametes by this another potential F1 parent = TY, Ty, tY, ty
e) Create a Punnette square explaining this:
P1 = Male (TTYY) * Female (ttyy)

F1 = TtYy (All offsrpings)

f) Phenotypic ratio of the F2 Plants =
9 tall yellow seeded plant
3 short yellow seeded plant
3 tall green seeded plant
1 short green seeded plant


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