WorksheetsMission 14: Patterns of Inheritance Quiz
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
A scientist observes that when two plants are crossed, the heterozygous offspring displays a phenotype that is distinctly different from both parents—showing red spots on a white background. Which inheritance pattern does this demonstrate?
a)
A mutation in the offspring
b)
Incomplete dominance
c)
Mendelian inheritance with complete dominance
d)
Co-dominance
2.
In pea plants, purple flowers (P) are dominant to white flowers (p). If a Pp plant is grown, what will its appearance be? Hint- This is an example of Mendelian Inheritance.
a)
White flowers only
b)
A blend of purple and white flowers
c)
Purple flowers only
d)
No flowers will develop
3.
A student is trying to determine the inheritance pattern of a trait in snapdragons. She observes that when a red snapdragon (RR) is crossed with a white snapdragon (WW), all offspring are pink (RW). What can she conclude about the relationship between the red and white alleles?
a)
The pink color is a new mutation
b)
Red is completely dominant to white
c)
Both alleles are equally expressed in the offspring
d)
Neither allele is completely dominant; they blend together
4.
Which of the following best explains why a heterozygous individual (Aa) in Mendelian inheritance looks identical to a homozygous dominant individual (AA)?
a)
The dominant allele completely masks the expression of the recessive allele
b)
The heterozygote has a stronger immune system
c)
Both alleles are equally expressed in the phenotype
d)
The recessive allele is destroyed during development
5.
In 'Roan' cattle, the heterozygous offspring (RW) display both red and white hairs across their body. This is an example of which inheritance pattern?
a)
Mendelian inheritance
b)
Recessive inheritance
c)
Incomplete dominance
d)
Co-dominance
6.
If incomplete dominance is occurring in a plant species, what would you expect to observe in the heterozygous offspring?
a)
An exact copy of the recessive parent
b)
A phenotype that is intermediate between the two parents
c)
An exact copy of the dominant parent
d)
A completely new phenotype not seen in either parent
7.
A researcher crosses two organisms and observes that the heterozygous offspring displays both parental traits simultaneously as distinct spots and stripes. Which inheritance pattern is most likely responsible for this observation?
a)
Mendelian inheritance with masking
b)
A lethal allele combination
c)
Co-dominance with simultaneous expression
d)
Incomplete dominance with blending
8.
In a hypothetical organism, allele A produces blue pigment and allele a produces yellow pigment. When an Aa individual is produced, it appears green. What does this tell you about the relationship between these alleles?
a)
The alleles show co-dominance and are both fully expressed
b)
The alleles show incomplete dominance and their effects blend
c)
Allele a is dominant and masks allele A
d)
Allele A is dominant and masks allele a
9.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Complete dominance
10.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Complete dominance
100 %
