WorksheetsGenetics & Punnet Squares
Total questions: 13
Worksheet time: 11mins
The physical appearance of a trait is known as the-
genotype
phenotype
Homozygous
intelligence
Gretford is heterozygous. If (R) for Round head, and (r) is for Egg head, what is Gretford's genotype?
RR
Rr
rr
rR
In plants, tall (T) is dominant to short (t).
Draw a punnett square and perform the following cross: Tt x Tt
What is the probability of producing a short plant?
0%
25%
50%
75%
A homozygous brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
Perform a punnett square cross and determine the phenotype & %.
100 % tan
100 % brown
50 % brown and 50% tan
75 % brown and 25 % tan
Phenotype determines genotype
True
False
What genotype would go in box 2? And is it Homozygous or Heterozygous?
BB Heterozygous
Bb Heterozygous
bb Homozygous
Bb Homozygous
What are the possible genotypes for this cross? And what percentage of each is produced?
TT = 25% Tt= 50% tt=25%
all tall
TT= 75% tt = 25%
Tt = 100%
A heterozygous tall pea plant (T) is crossed with a short pea plant (t).
Perform a punnett square cross and determine the Genotype & %.
100% Tt
50% Tt, 50% tt
75%Tt, 25%tt
25%TT, 50%Tt, 25%tt
Kyree is heterozygous. If (W) is for waves, and (w) if for no waves.
What is Kyree’s genotype & phenotype?
WW : waves
ww : waves
Ww : no waves
Ww : Waves
