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WorksheetsPunnett Squares Practice
Total questions: 10
Worksheet time: 13mins
In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?
0%
25%
50%
100%
Aa, DD, bB, yy are all examples of
Genotypes
Phenotypes
Chromosomes
Dihybrid crosses
Which of the following is a phenotype?
Aa
Heterozygous
DNA
Red Hair
What are the possible genotypes for this cross?
TT = 25%
Tt= 50%
tt=25%
TT = 75%
Tt= 25%
Tt= 50%
tt=50%
All tall
If green (G) is dominant over purple (g), then what is the genotype for this individual?
What is the physical characteristics that results from the expression of genes?
(a)
In guinea pigs, the allele for short hair is dominant. If all the guinea pigs are born short haired what are the possible genotypes of the parents? (There are two possible combinations.)
Ss+Ss
SS+SS
SS+ss
SS+Ss
What are the possible phenotype(s) of the offspring? (A-Brown hair; a-blond hair)
50 % Brown Hair and 50% Blond Hair
25 % Brown Hair and 75% Blond Hair
75 % Brown Hair and 25% Blond Hair
0% Brown Hair and 100% Blond Hair
What genotype would go in box 2?
And is it Homozygous or Heterozygous?
BB Heterozygous
Bb Heterozygous
bb Homozygous
Bb Homozygous
In watermelons, green rinds (G) are dominant to striped rinds (g). What is the genotype of a heterozygous green watermelon?
GG
Gg
gg
Green
