The Monohybrid Cross – Check Test
1. A
monohybrid cross follows the inheritance of
A one characteristic.
B two characteristics.
C three characteristics.
D four characteristics.
2. All true-breeding
organisms
A have the same characteristics.
B produce gametes with different
characteristics.
C always pass on the same characteristic to
their offspring.
D pass on different characteristics to their
offspring.
3. A
true-breeding organism is always
A homozygous.
B heterozygous.
C dominant.
D recessive.
4. True-breeding
organisms are useful in breeding experiments
because
A they are more fertile.
B they have the same phenotype.
C their genotype is known for certain.
D their offspring are all different.
5. What is
the correct order of generations in a cross?
A P -> F2 -> F1
B F1 -> F2 -> P
C P -> F1 -> F2
D F2 -> F1 ->P
Questions
6,7 and 8 refer to the following information
about a
breeding experiment.
In pea
plants, the allele for pink flower petals (P) is dominant
to that
for white flower petals (p).
A
true-breeding pink-flowered plant is crossed with a true-breeding
white-flowered
plant and the plants of the F1 generation are self-crossed.
6. In the F1
generation
A all of the plants will have white flowers.
B there will be more pink-flowered plants
than white-flowered
plants.
C there will be an equal number of
pink-flowered and
white-flowered plants.
D all of the plants will have pink flowers.
7. The punnett square shows the genotypes
arising in the F2 generation of this cross.
|
M/F |
P |
p |
|
P |
PP |
Pp |
|
p |
X |
Y |
Which genotypes should appear
at X and Y?
|
|
X |
Y |
|
A |
PP |
pp |
|
B |
Pp |
pp |
|
C |
pp |
Pp |
|
D |
Pp |
Pp |
8. In the F2
generation, what would be the phenotype ratio?
A 1 pink : 3 white
B 3 pink : 1 white
C 2 pink : 2 white
D 4 pink : 1 white