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WorksheetsGenetics and Punnett Squares (9.19)
Total questions: 20
Worksheet time: 3hrs 20mins
Short = S
Short = t
Short = T
Short = tt
Identify the homozygous dominant genotype:
FF
Ff
ff
fF
Which of the following would be a phenotype?
Aa
red hair
heterozygous
aa
Which of the following genotypes is homozygous dominant?
Yy
yY
yy
YY
Which of the following genotypes is homozygous recessive?
Tt
tt
TT
tT
Which choice best represents the genotypic ratios for the offspring of this cross?
1 Yy: 2 yy: 0 YY
2 Yy: 2 yy: 0 YY
3 Yy: 1 yy: 0 YY
1 Yy: 3 yy: 0 YY
Fill in the Yellow Box
AA
Aa
aa
none of these
Fill in the Yellow Box
Bb
BB
bb
none of these
What is the probability that the offspring born from this cross will have a homozygous dominant genotype?
25%
50%
75%
100%
The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the probability the baby frogs from this cross will have brown skin?
0%
25%
50%
100%
Purple (P) is dominant to the white (p).
According to the Punnett Square, what is the probability of an offspring being purple?
25%
0%
100%
50%
What is the dominant trait?
yellow pea seeds
green pea seeds
there is no dominant seed
Jolly green giant
What are the genotypic probabilities for the offspring of this cross?
25% blue eye 75 % brown eye
BB = 25% Bb = 50% bb = 25%
BB= 50 % bb = 50%
All brown eye
