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WorksheetsGenetics and Mendelian Inheritance Practice Test
Total questions: 20
Worksheet time: 10mins
Which describes an organism with two different alleles (e.g., Aa)?
Homozygous dominant
Homozygous recessive
Heterozygous
Purebred
In Mendelian inheritance, which phenotype shows in the F1 from a homozygous dominant x homozygous recessive cross?
Recessive
Dominant
Blend
Neither
Red x White = Pink offspring is:
Complete dominance
Codominance
Incomplete dominance
Epistasis
Black x White = Speckled calf is:
Incomplete dominance
Codominance
Mendelian
Mutation
What is a 'genotype'?
Physical appearance
Genetic makeup
Food chain position
Survival ability
'Father of Genetics'?
Darwin
Mendel
Punnett
Watson
A Punnett square predicts:
Exact offspring count
Probability of traits
DNA changes
Evolution
Phenotypic ratio of Aa x Aa:
1:2:1
4:0
3:1
2:2
How many alleles for a single gene does an individual typically inherit from each parent?
1
2
23
46
Homozygous recessive genotype:
TT
Tt
tt
T
An allele is:
A cell
A version of a gene
Chromosome center
A protein
When does a recessive trait show?
Two copies present
One copy present
Males only
When blended
Letters on the outside of a square:
Offspring
Parent gametes
Mutations
Population size
'Purebred' means:
Heterozygous
Homozygous
Recessive only
Dominant only
If B=Brown and b=blue, which are Brown?
bb
BB
BB and Bb
Bb and bb
Incomplete dominance: Pink x Pink. % Pink?
0%
25%
50%
100%
Codominant heterozygous individual:
Blended
Both traits fully show
Like dominant parent
Dies
Probability of coin landing 'heads':
25%
50%
75%
100%
Which is a phenotype?
Rr
Homozygous
Tall height
Heterozygous
Tall x Short = 100% Tall. Tall is:
Recessive
Codominant
Dominant
Incomplete
