WorksheetsPunnett Square
Total questions: 14
Worksheet time: 11mins
Name
Class
Date
1.
A characteristic that an organism can pass on to its offspring through its genes is ___________
a)
Trait
b)
Gene
c)
Allele
d)
Dominant
2.
An allele that is masked when a dominant allele is present. The "weaker" gene.
a)
Dominant Allele
b)
Recessive Allele
3.
An allele whose trait always shows up in the organism when the allele is present. The "stronger" gene.
a)
Dominant Allele
b)
Recessive Allele
4.
An organism’s genetic makeup or allele combination.
a)
Genotype
b)
Phenotype
c)
Beanotype
d)
Notype
5.
An organism’s physical appearance, or visible traits.
a)
Genotype
b)
Phenotype
c)
Beanotype
d)
Notype
6.
What is called when a organism has two different alleles for a trait. Tt or Rr
a)
Heterozygous
b)
Homozygous
c)
Domozygous
d)
Thermozygous
7.
What is called when a organism has two identical alleles for a trait. TT or tt. RR or rr
a)
Heterozygous
b)
Homozygous
c)
Domozygous
d)
Thermozygous
8.
Punnett squares can be used to predict the probability of:
a)
being exposed to a contagious disease and contracting it
b)
having an inherited disease or a genetically determined physical trait
c)
Both
9.
A factor that covers up another factor is _____
a)
Recessive
b)
Obsessive
c)
Dominant
d)
Combinant
10.
Scientists use capital and small letters to show the _____ of an organism.
a)
genotype
b)
genetic disorder
c)
phenotype
d)
genome
11.
An organism that has one dominant and one recessive allele for height is _____.
a)
unusual
b)
homozygous
c)
mutated
d)
heterozygous
12.
In a certain species of plant, the color purple (P) is dominant to the color white (p).
According to the Punnett Square, what is the probability of an offspring being purple?
According to the Punnett Square, what is the probability of an offspring being purple?
a)
25%
b)
0%
c)
100%
d)
50%
13.
In a certain species of plant, the color purple (P) is dominant to the color white (p).
According to the Punnett Square, what is the probability of an offspring being white?
According to the Punnett Square, what is the probability of an offspring being white?
a)
25%
b)
0%
c)
100%
d)
50%
14.
Is it possible for a visible trait to skip a generation? Example: Blue eyes
a)
Yes
b)
No
100 %
